CodeGraderBench/CodeGraderBench huggingface dataset:
Problem: You are required to write a C++ program that prints a right-aligned pattern using the uppercase characters O and X.

Each row of the pattern must follow these rules:

1. The pattern consists of n rows.
2. The first row contains n characters, and each next row contains one less character than the previous row.
3. Every row must start with the character O.
4. The characters must alternate between O and X (O X O X ...).
5. The pattern must be right-aligned, meaning each row is preceded by spaces so that the last characters line up vertically.
6. There must be no spaces between O and X characters.
7. Only print the pattern. Do not print any extra messages, prompts, or labels.

Input:
An integer n representing the number of rows.

Output:
Print the right-aligned alternating pattern of O and X.

Example:

Input:
5

Output:
OXOXO
 OXOX
  OXO
   OX
    O

Important Notes:
- Do not print messages like "Enter a number" or "The output is".
- Use cout only to print the pattern.
- Do not hard-code the output.
- Do not add extra spaces except those needed for right alignment.

Student submission:
#include <iostream>
using namespace std;

int main(){
    int n; cin>>n;
    int space=0;
    int ncopy=n;
    for(int i=0;i<n;i++){
        for (int k=0;k<space;k++) cout <<" ";
        for (int k=0;k<ncopy;k++){
            if (k%2==0) cout<< "O";
            else cout<< "X";
        }
        cout<<endl;
        space+=1;
        ncopy-=1;
    }
}

Grading criterion: Outer loop
Rating A: The outer loop is correctly coded to run n times
Rating B: Some issue
Rating C: Major issue
Rating D: 0
Assigned grade: A
Problem: You are required to write a C++ program that prints a right-aligned pattern using the uppercase characters O and X.

Each row of the pattern must follow these rules:

1. The pattern consists of n rows.
2. The first row contains n characters, and each next row contains one less character than the previous row.
3. Every row must start with the character O.
4. The characters must alternate between O and X (O X O X ...).
5. The pattern must be right-aligned, meaning each row is preceded by spaces so that the last characters line up vertically.
6. There must be no spaces between O and X characters.
7. Only print the pattern. Do not print any extra messages, prompts, or labels.

Input:
An integer n representing the number of rows.

Output:
Print the right-aligned alternating pattern of O and X.

Example:

Input:
5

Output:
OXOXO
 OXOX
  OXO
   OX
    O

Important Notes:
- Do not print messages like "Enter a number" or "The output is".
- Use cout only to print the pattern.
- Do not hard-code the output.
- Do not add extra spaces except those needed for right alignment.

Student submission:
#include<simplecpp>
main_program{
    int n;
    cin>>n;
    if(n%2!=0){
        for(int k=0;n>0;k++,n-=2){
        for(int i=0;i<k;i++)cout<<" ";
        cout<<"O";
        int m = ((n-1)/2 );
        for(int i=0;i<m;i++)cout<<"XO";
        cout<<endl;
        k++;
        for(int i=0;i<k;i++)cout<<" ";
        for(int i=0;i<m;i++)cout<<"OX";
        cout<<endl;
    }
    }
    else {
        for(int k=0;n>0;k++,n-=2){
        for(int i=0;i<k;i++)cout<<" ";
        int m = (n/2 );
        for(int i=0;i<m;i++)cout<<"OX";
        cout<<endl;
        k++;
        for(int i=0;i<k;i++)cout<<" ";
        for(int i=0;i<(m-1);i++)cout<<"OX";
        cout<<"O";
        cout<<endl;
        }
    }
}

Grading criterion: Outer loop
Rating A: The outer loop is correctly coded to run n times
Rating B: Some issue
Rating C: Major issue
Rating D: 0
Assigned grade: A
Problem: You are required to write a C++ program that prints a right-aligned pattern using the uppercase characters O and X.

Each row of the pattern must follow these rules:

1. The pattern consists of n rows.
2. The first row contains n characters, and each next row contains one less character than the previous row.
3. Every row must start with the character O.
4. The characters must alternate between O and X (O X O X ...).
5. The pattern must be right-aligned, meaning each row is preceded by spaces so that the last characters line up vertically.
6. There must be no spaces between O and X characters.
7. Only print the pattern. Do not print any extra messages, prompts, or labels.

Input:
An integer n representing the number of rows.

Output:
Print the right-aligned alternating pattern of O and X.

Example:

Input:
5

Output:
OXOXO
 OXOX
  OXO
   OX
    O

Important Notes:
- Do not print messages like "Enter a number" or "The output is".
- Use cout only to print the pattern.
- Do not hard-code the output.
- Do not add extra spaces except those needed for right alignment.

Student submission:
#include<simplecpp>
main_program{
    int n;
    cin>>n;
    int x=n;

    for(int i=0; i<n; i++){
       repeat(i){
        cout<<" ";
       }
       for(int j=0;j<x;j++){
            if(j%2==0){
                cout<<"O";
            }
            else{
                cout<<"X";
            }
        } 
    x--;
    cout<<endl;
    }
}

Grading criterion: Outer loop
Rating A: The outer loop is correctly coded to run n times
Rating B: Some issue
Rating C: Major issue
Rating D: 0
Assigned grade: A
Problem: You are required to write a C++ program that prints a right-aligned pattern using the uppercase characters O and X.

Each row of the pattern must follow these rules:

1. The pattern consists of n rows.
2. The first row contains n characters, and each next row contains one less character than the previous row.
3. Every row must start with the character O.
4. The characters must alternate between O and X (O X O X ...).
5. The pattern must be right-aligned, meaning each row is preceded by spaces so that the last characters line up vertically.
6. There must be no spaces between O and X characters.
7. Only print the pattern. Do not print any extra messages, prompts, or labels.

Input:
An integer n representing the number of rows.

Output:
Print the right-aligned alternating pattern of O and X.

Example:

Input:
5

Output:
OXOXO
 OXOX
  OXO
   OX
    O

Important Notes:
- Do not print messages like "Enter a number" or "The output is".
- Use cout only to print the pattern.
- Do not hard-code the output.
- Do not add extra spaces except those needed for right alignment.

Student submission:
#include<iostream>
using namespace std;
int main(){
    int n;
    cin>>n;
    for(int i=1;i<=n;i++){
        for(int j=1;j<=i-1;j++){
            cout<<" ";
        }
        for(int j=1;j<=n-i+1;j++){
            if(j%2==0)
            cout<<"X";
            else
            cout<<"O";
        }
        cout<<endl;
    }
    return 0;
}

Grading criterion: Outer loop
Rating A: The outer loop is correctly coded to run n times
Rating B: Some issue
Rating C: Major issue
Rating D: 0
Assigned grade: A
Problem: You are required to write a C++ program that prints a right-aligned pattern using the uppercase characters O and X.

Each row of the pattern must follow these rules:

1. The pattern consists of n rows.
2. The first row contains n characters, and each next row contains one less character than the previous row.
3. Every row must start with the character O.
4. The characters must alternate between O and X (O X O X ...).
5. The pattern must be right-aligned, meaning each row is preceded by spaces so that the last characters line up vertically.
6. There must be no spaces between O and X characters.
7. Only print the pattern. Do not print any extra messages, prompts, or labels.

Input:
An integer n representing the number of rows.

Output:
Print the right-aligned alternating pattern of O and X.

Example:

Input:
5

Output:
OXOXO
 OXOX
  OXO
   OX
    O

Important Notes:
- Do not print messages like "Enter a number" or "The output is".
- Use cout only to print the pattern.
- Do not hard-code the output.
- Do not add extra spaces except those needed for right alignment.

Student submission:
#include <simplecpp>
main_program{
    int n ;
    cin >> n ;
    for(int i=0; i<n; i++){
        for(int j = 0; j<=n-i-1;j++){
            cout<<" ";}
         for (int j=0; j<=n-i-1; j++){
        cout <<"O";
        cout<< "X";}
         
cout<< endl;
    }
    }

Grading criterion: Outer loop
Rating A: The outer loop is correctly coded to run n times
Rating B: Some issue
Rating C: Major issue
Rating D: 0
Assigned grade: A
Problem: You are required to write a C++ program that prints a right-aligned pattern using the uppercase characters O and X.

Each row of the pattern must follow these rules:

1. The pattern consists of n rows.
2. The first row contains n characters, and each next row contains one less character than the previous row.
3. Every row must start with the character O.
4. The characters must alternate between O and X (O X O X ...).
5. The pattern must be right-aligned, meaning each row is preceded by spaces so that the last characters line up vertically.
6. There must be no spaces between O and X characters.
7. Only print the pattern. Do not print any extra messages, prompts, or labels.

Input:
An integer n representing the number of rows.

Output:
Print the right-aligned alternating pattern of O and X.

Example:

Input:
5

Output:
OXOXO
 OXOX
  OXO
   OX
    O

Important Notes:
- Do not print messages like "Enter a number" or "The output is".
- Use cout only to print the pattern.
- Do not hard-code the output.
- Do not add extra spaces except those needed for right alignment.

Student submission:
#include <simplecpp>

main_program{
	int n = 0, spaces = 0;
	cin>>n;
	for(int i = 0; i < n; i++){
		spaces = i;
		for(int j = 0; j < spaces; j++)
			cout<<" ";

		for(int k = 0; k < n-i; k++){
			if(k%2 == 0)
				cout<<"O";
			else
				cout<<"X";
		}
		cout<<"\n";
	}
}

Grading criterion: Outer loop
Rating A: The outer loop is correctly coded to run n times
Rating B: Some issue
Rating C: Major issue
Rating D: 0
Assigned grade: A
Problem: You are required to write a C++ program that prints a right-aligned pattern using the uppercase characters O and X.

Each row of the pattern must follow these rules:

1. The pattern consists of n rows.
2. The first row contains n characters, and each next row contains one less character than the previous row.
3. Every row must start with the character O.
4. The characters must alternate between O and X (O X O X ...).
5. The pattern must be right-aligned, meaning each row is preceded by spaces so that the last characters line up vertically.
6. There must be no spaces between O and X characters.
7. Only print the pattern. Do not print any extra messages, prompts, or labels.

Input:
An integer n representing the number of rows.

Output:
Print the right-aligned alternating pattern of O and X.

Example:

Input:
5

Output:
OXOXO
 OXOX
  OXO
   OX
    O

Important Notes:
- Do not print messages like "Enter a number" or "The output is".
- Use cout only to print the pattern.
- Do not hard-code the output.
- Do not add extra spaces except those needed for right alignment.

Student submission:
#include <simplecpp>
main_program{
    int n; //number of rows
    cin>>n;
    for (int i=1;i<=n;i++){ //i indicates which row we are on
        for (int space=i;space>1;space--){ //number of spaces for ith row
            cout<<" ";
        }
        for (int j=1;j<=(n+1-i);j++){
            ((j%2)==0)? cout<<"X" : cout<<"O"; //alternate printing using ternary operator and divisibility of column by 2
        }


    cout<<endl;    
    }
}

Grading criterion: Outer loop
Rating A: The outer loop is correctly coded to run n times
Rating B: Some issue
Rating C: Major issue
Rating D: 0
Assigned grade: A
Problem: You are required to write a C++ program that prints a right-aligned pattern using the uppercase characters O and X.

Each row of the pattern must follow these rules:

1. The pattern consists of n rows.
2. The first row contains n characters, and each next row contains one less character than the previous row.
3. Every row must start with the character O.
4. The characters must alternate between O and X (O X O X ...).
5. The pattern must be right-aligned, meaning each row is preceded by spaces so that the last characters line up vertically.
6. There must be no spaces between O and X characters.
7. Only print the pattern. Do not print any extra messages, prompts, or labels.

Input:
An integer n representing the number of rows.

Output:
Print the right-aligned alternating pattern of O and X.

Example:

Input:
5

Output:
OXOXO
 OXOX
  OXO
   OX
    O

Important Notes:
- Do not print messages like "Enter a number" or "The output is".
- Use cout only to print the pattern.
- Do not hard-code the output.
- Do not add extra spaces except those needed for right alignment.

Student submission:
#include<simplecpp>

main_program{
    int n;
   
    cin>>n;
    for(int i=1;i<=n;i++){
     for( int k=0;k<n;k++){
        cout<<" ";
     }
       
        
        for(int j=i;j<=n;j++){
         if((i+j)%2==0)
         cout<<"o";
         
         else
         cout<<"x";
        }
cout<<endl;
    }
}

Grading criterion: Outer loop
Rating A: The outer loop is correctly coded to run n times
Rating B: Some issue
Rating C: Major issue
Rating D: 0
Assigned grade: A
Problem: You are required to write a C++ program that prints a right-aligned pattern using the uppercase characters O and X.

Each row of the pattern must follow these rules:

1. The pattern consists of n rows.
2. The first row contains n characters, and each next row contains one less character than the previous row.
3. Every row must start with the character O.
4. The characters must alternate between O and X (O X O X ...).
5. The pattern must be right-aligned, meaning each row is preceded by spaces so that the last characters line up vertically.
6. There must be no spaces between O and X characters.
7. Only print the pattern. Do not print any extra messages, prompts, or labels.

Input:
An integer n representing the number of rows.

Output:
Print the right-aligned alternating pattern of O and X.

Example:

Input:
5

Output:
OXOXO
 OXOX
  OXO
   OX
    O

Important Notes:
- Do not print messages like "Enter a number" or "The output is".
- Use cout only to print the pattern.
- Do not hard-code the output.
- Do not add extra spaces except those needed for right alignment.

Student submission:
#include <iostream>
using namespace std;

int main () {
    int n;
    cin >> n;
    bool b ;
    char ch1 = 'O';
    char ch2 = 'X';
    for (int i = 0; i < n; i++) {
        b = 1;
        for (int m = 0; m < i ; m++) {
            cout << " ";
        }
        for ( int m = n; m > i; m-- ){
            if ( b == 0){
                cout << ch2;
                b = 1;
                continue;
            }
            if ( b == 1) {
                cout << ch1;
                b = 0;
                continue;
            }
        }
        cout << endl;
    }
}

Grading criterion: Outer loop
Rating A: The outer loop is correctly coded to run n times
Rating B: Some issue
Rating C: Major issue
Rating D: 0
Assigned grade: A
Problem: You are required to write a C++ program that prints a right-aligned pattern using the uppercase characters O and X.

Each row of the pattern must follow these rules:

1. The pattern consists of n rows.
2. The first row contains n characters, and each next row contains one less character than the previous row.
3. Every row must start with the character O.
4. The characters must alternate between O and X (O X O X ...).
5. The pattern must be right-aligned, meaning each row is preceded by spaces so that the last characters line up vertically.
6. There must be no spaces between O and X characters.
7. Only print the pattern. Do not print any extra messages, prompts, or labels.

Input:
An integer n representing the number of rows.

Output:
Print the right-aligned alternating pattern of O and X.

Example:

Input:
5

Output:
OXOXO
 OXOX
  OXO
   OX
    O

Important Notes:
- Do not print messages like "Enter a number" or "The output is".
- Use cout only to print the pattern.
- Do not hard-code the output.
- Do not add extra spaces except those needed for right alignment.

Student submission:
#include<simplecpp>
main_program{
    int n;
    cin>>n;
    for(int i=0; i<n; i++){
        for(int j=0; j<n; j++){
            if(j>=i){
                if((i+j)%2==0) cout<<"O";
                else cout<<"X";
            }
            else cout<<" ";
        }
        cout<<endl;
    }
}

Grading criterion: Outer loop
Rating A: The outer loop is correctly coded to run n times
Rating B: Some issue
Rating C: Major issue
Rating D: 0
Assigned grade: A
Problem: You are required to write a C++ program that prints a right-aligned pattern using the uppercase characters O and X.

Each row of the pattern must follow these rules:

1. The pattern consists of n rows.
2. The first row contains n characters, and each next row contains one less character than the previous row.
3. Every row must start with the character O.
4. The characters must alternate between O and X (O X O X ...).
5. The pattern must be right-aligned, meaning each row is preceded by spaces so that the last characters line up vertically.
6. There must be no spaces between O and X characters.
7. Only print the pattern. Do not print any extra messages, prompts, or labels.

Input:
An integer n representing the number of rows.

Output:
Print the right-aligned alternating pattern of O and X.

Example:

Input:
5

Output:
OXOXO
 OXOX
  OXO
   OX
    O

Important Notes:
- Do not print messages like "Enter a number" or "The output is".
- Use cout only to print the pattern.
- Do not hard-code the output.
- Do not add extra spaces except those needed for right alignment.

Student submission:
#include<simplecpp>
main_program{

int n;
cin>>n;

for(int i = 1;i<=n;i++){

    
    
    
    for(int j=1;j<=n;j++){
    if (i>j){
        cout<<" ";
    }
    else if((i+j)%2 == 0){
            cout<<"O";
        }
    else{cout<<"X";}
    }
    
    cout<<endl;
}




}

Grading criterion: Outer loop
Rating A: The outer loop is correctly coded to run n times
Rating B: Some issue
Rating C: Major issue
Rating D: 0
Assigned grade: A
Problem: You are required to write a C++ program that prints a right-aligned pattern using the uppercase characters O and X.

Each row of the pattern must follow these rules:

1. The pattern consists of n rows.
2. The first row contains n characters, and each next row contains one less character than the previous row.
3. Every row must start with the character O.
4. The characters must alternate between O and X (O X O X ...).
5. The pattern must be right-aligned, meaning each row is preceded by spaces so that the last characters line up vertically.
6. There must be no spaces between O and X characters.
7. Only print the pattern. Do not print any extra messages, prompts, or labels.

Input:
An integer n representing the number of rows.

Output:
Print the right-aligned alternating pattern of O and X.

Example:

Input:
5

Output:
OXOXO
 OXOX
  OXO
   OX
    O

Important Notes:
- Do not print messages like "Enter a number" or "The output is".
- Use cout only to print the pattern.
- Do not hard-code the output.
- Do not add extra spaces except those needed for right alignment.

Student submission:
#include <simplecpp>

main_program{
	int n;
	cin>>n;
	for (int i=0; i<n;++i){
		bool isX = false;
		for (int j=0; j<i;j++) cout<<" ";
		for (int j=0; j<n-i;j++){
			if (isX) cout<<"X";
			else cout<<"O";
			isX = !isX;
		}
		cout<<endl;
	}
}

Grading criterion: Outer loop
Rating A: The outer loop is correctly coded to run n times
Rating B: Some issue
Rating C: Major issue
Rating D: 0
Assigned grade: A
Problem: You are required to write a C++ program that prints a right-aligned pattern using the uppercase characters O and X.

Each row of the pattern must follow these rules:

1. The pattern consists of n rows.
2. The first row contains n characters, and each next row contains one less character than the previous row.
3. Every row must start with the character O.
4. The characters must alternate between O and X (O X O X ...).
5. The pattern must be right-aligned, meaning each row is preceded by spaces so that the last characters line up vertically.
6. There must be no spaces between O and X characters.
7. Only print the pattern. Do not print any extra messages, prompts, or labels.

Input:
An integer n representing the number of rows.

Output:
Print the right-aligned alternating pattern of O and X.

Example:

Input:
5

Output:
OXOXO
 OXOX
  OXO
   OX
    O

Important Notes:
- Do not print messages like "Enter a number" or "The output is".
- Use cout only to print the pattern.
- Do not hard-code the output.
- Do not add extra spaces except those needed for right alignment.

Student submission:
#include<simplecpp>
main_program
{
    int n;
    cin>>n;
    for(int i=1; i<=n;i++)
    {
        for(int j=1;j<=n;j++)
        {
            if(j>=i)
            {
                if((i+j)%2==0) cout<<"O";
                else cout<<"X";
            }
            else 
            cout<<" ";
        }
        cout<<endl;
    }
}

Grading criterion: Outer loop
Rating A: The outer loop is correctly coded to run n times
Rating B: Some issue
Rating C: Major issue
Rating D: 0
Assigned grade: A
Problem: You are required to write a C++ program that prints a right-aligned pattern using the uppercase characters O and X.

Each row of the pattern must follow these rules:

1. The pattern consists of n rows.
2. The first row contains n characters, and each next row contains one less character than the previous row.
3. Every row must start with the character O.
4. The characters must alternate between O and X (O X O X ...).
5. The pattern must be right-aligned, meaning each row is preceded by spaces so that the last characters line up vertically.
6. There must be no spaces between O and X characters.
7. Only print the pattern. Do not print any extra messages, prompts, or labels.

Input:
An integer n representing the number of rows.

Output:
Print the right-aligned alternating pattern of O and X.

Example:

Input:
5

Output:
OXOXO
 OXOX
  OXO
   OX
    O

Important Notes:
- Do not print messages like "Enter a number" or "The output is".
- Use cout only to print the pattern.
- Do not hard-code the output.
- Do not add extra spaces except those needed for right alignment.

Student submission:
#include<simplecpp>

int main(){
    cout<<"enter a number:";
    int n;
    cin>>n;

    for(int i=1;i<=n;i++){
        int O,X;
        cout<<O<<X<<endl;
    }
}

Grading criterion: Outer loop
Rating A: The outer loop is correctly coded to run n times
Rating B: Some issue
Rating C: Major issue
Rating D: 0
Assigned grade: A
Problem: You are required to write a C++ program that prints a right-aligned pattern using the uppercase characters O and X.

Each row of the pattern must follow these rules:

1. The pattern consists of n rows.
2. The first row contains n characters, and each next row contains one less character than the previous row.
3. Every row must start with the character O.
4. The characters must alternate between O and X (O X O X ...).
5. The pattern must be right-aligned, meaning each row is preceded by spaces so that the last characters line up vertically.
6. There must be no spaces between O and X characters.
7. Only print the pattern. Do not print any extra messages, prompts, or labels.

Input:
An integer n representing the number of rows.

Output:
Print the right-aligned alternating pattern of O and X.

Example:

Input:
5

Output:
OXOXO
 OXOX
  OXO
   OX
    O

Important Notes:
- Do not print messages like "Enter a number" or "The output is".
- Use cout only to print the pattern.
- Do not hard-code the output.
- Do not add extra spaces except those needed for right alignment.

Student submission:
#include<simplecpp>
void pattern(int n){
    
    for(int i=0;i<n;i++){
        for(int j=0;j<i;j++){
            cout<<" ";
        }
        bool r=true;
        for(int k=0;k<(n-i);k++){
            if(r){
                cout<<"O";
                r=false;

            }
            else{
                cout<<"X";
                r=true;
            }
            
        }
        cout<<endl;
    }


}
main_program{
    int n;
    cin>>n;
    pattern(n);
}

Grading criterion: Outer loop
Rating A: The outer loop is correctly coded to run n times
Rating B: Some issue
Rating C: Major issue
Rating D: 0
Assigned grade: A