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<simplecpp>
main_program{
    int n,j=2;
    cin>>n;
    while(n>0){
    for(int i=0;i<n;i++){
        if(i%2==0)
        cout<< "O";
        else
        cout<<"X";

    }
    n--;
    j++;
    cout<< endl;
    for(int i=1;i<j;i++)
    cout<< " ";
    }
}

Grading criterion: Printing X or O
Rating A: Correctly prints alternating characters of O and X
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=i;j>0;j--){
            cout<<" ";
        }
        for(int k=1;k<=n-i;k++){
          if(i%2==0) { if((i+k)%2==0){
                cout<<"X";
            }
            else{
                cout<<"O";
            }}
            else{
                if((i+k)%2==0){
                cout<<"O";
            }
            else{
                cout<<"X";
            }

            }

        }
        cout<<endl;
    }
}

Grading criterion: Printing X or O
Rating A: Correctly prints alternating characters of O and X
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<i ;j++){
            cout << ' ';
        }
        for(int k = 0 ; k< (n-i+1)/2 ; k++){
            cout << 'O';
            cout << 'X';
        }

        if((n-i+1)%2==1){
            cout << 'O';
        }
        cout << endl;
    }
}

Grading criterion: Printing X or O
Rating A: Correctly prints alternating characters of O and X
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 j=n; j>0; j--){
            if(j%2==1){
                repeat(j/2){
                    cout << "OX";
                } cout << "O" << endl;
                } else {
                    repeat(j/2){
                        cout << "OX";
                    } cout << endl;
                }
                repeat(n-j){cout << " ";}
    }
}

Grading criterion: Printing X or O
Rating A: Correctly prints alternating characters of O and X
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=0;i<n;i++){
        for(int j=0;j<i;j++){
            cout<<" ";
        }
        cout<<"O";
        int a=n-i;
        int b=a/2;
        if(a%2==0){
            cout<<"X";
            for(int j=0;j<b-1;j++){
                cout<<"OX";
            }
        }else{
            for(int j=0;j<b;j++){
                cout<<"XO";
            }
        }

       cout<<endl;
}
}

Grading criterion: Printing X or O
Rating A: Correctly prints alternating characters of O and X
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=n; i>0; i--){
        int spaces=n-i;
        repeat(spaces){cout<<" ";}
        for(int j=1; j<=i; j++){
            if (j&1) cout<<"O";
            else cout<<"X";
        }
        cout<<endl;
    }
}

Grading criterion: Printing X or O
Rating A: Correctly prints alternating characters of O and X
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,i,j;
    cin>>n;
    for(i=1; i<=n; i++){
        for(j=0; j<=(n-1-i); j++){
            cout<<" ";
        }
        for(j=0; j<=(n-i-1); j++){
            if((i+j)%2==0) cout<<"O";
            else cout<<"X";
        }
        cout<<endl;
    }
}

Grading criterion: Printing X or O
Rating A: Correctly prints alternating characters of O and X
Rating B: Some issue

Rating C: Major issue
Rating D: 0
Assigned grade: C
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,s=0,i,j,k,l;
    cin >> n;
    for(i=0;i<n;i++){
        for(k=0;k<s;k++){
            cout << " ";
        }
        for(l=0;l<n-s;l++){
            if(l%2==0){
                cout << "O";
            }
            else{
                cout << "X";
            }
        }
        s+=1;
        cout << endl;
    }
}

Grading criterion: Printing X or O
Rating A: Correctly prints alternating characters of O and X
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<=50&&n>=1){
int j=n;
for(int i=0;i<n;i++){
    for(int p=0;p<i;p++){
        cout<<" ";
    }
    cout<<"O";

    char a ='O';
    char b ='X';
    for(int k=j-1;k>0;k--){
        cout<<b;
        char z=b;
        b=a;
        a=z;
    }
    cout<<endl;
    j=j-1;

}
}
}

Grading criterion: Printing X or O
Rating A: Correctly prints alternating characters of O and X
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=i; j<=n;j++){
            cout<<"OX";
        }
        cout<<endl;
    }
}

Grading criterion: Printing X or O
Rating A: Correctly prints alternating characters of O and X
Rating B: Some issue

Rating C: Major issue
Rating D: 0
Assigned grade: C
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 rows;
    cin>>rows;
    int spaces=0;
    int width=rows;
    
    for (int i=1;i<=rows;i++){
        for(int j=0;j<=spaces;j++){cout<<" ";}
            for(int k=width;k>=1;k--){
                if(width%2==0){cout<<"O";}
                else{cout<<"X";}
            }
           
            width-=1;
            spaces+=1;
            cout<<endl;
        
    }


}

Grading criterion: Printing X or O
Rating A: Correctly prints alternating characters of O and X
Rating B: Some issue

Rating C: Major issue
Rating D: 0
Assigned grade: C
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++){
        if(i>1){
        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;
    }
}

Grading criterion: Printing X or O
Rating A: Correctly prints alternating characters of O and X
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:
main_program{
    int n;
    int i;
    int x; 
    char X;
    char O;
    cin >> n;
    for(i=n; i>0; --i){
            for (x=1;x<=i;++x){
                if(x%2 == 0){
                    cout << 'X';
                }
                if (x%2 == 1){
                    cout << 'O' ;
                }
            }
              cout << endl;  
                }
        }

Grading criterion: Printing X or O
Rating A: Correctly prints alternating characters of O and X
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 printLine(int spaces, int n){
    for(int i =0; i<spaces; i++){
        cout << " ";
    }
    for(int i = 0; i<n-spaces;i++){
        cout << ((i%2==0)?"O":"X");
    }
    cout << endl;
}

int main(){
    int n;
    cin >>n;
    for(int i =0; i<n;i++){
        printLine(i,n);
    }
}

Grading criterion: Printing X or O
Rating A: Correctly prints alternating characters of O and X
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=n;i>0;i--)
    {
        for(int j=n-i;j>0;j--)
            cout << " " ;
        for(int k=1;k<=i;k++)
        {
            if(k%2==0)
                cout << "X" ;
            else
                cout << "O" ;
        }
        cout << "\n" ;
    }
}

Grading criterion: Printing X or O
Rating A: Correctly prints alternating characters of O and X
Rating B: Some issue

Rating C: Major issue
Rating D: 0
Assigned grade: A