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;
    cin >> n;
    for(int i=0;i<n;i++){
          repeat(i){cout << " ";}
          if((n-i)%2==0)  {repeat((n-i)/2){cout << "OX";}}
          else if((n-i)%2==1)  {
                    repeat((n-i-1)/2){cout << "OX";}
                    cout << "O";                  }
        
         cout << endl;
    }
}

Grading criterion: Declaration of variables
Rating A: correctly declares the variable n and other variables as required
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<<" ";
		}
		
		if(i%2!=0) {
			for(int j=i;j<=n;j++){
		
				if(j%2!=0) cout<<"O";
				else cout<<"X";
						
			}
		}
		
		if(i%2==0) {
			for(int j=i;j<=n;j++) {
			
				if(j%2!=0) cout<<"X";
				else cout<<"O";
				
			}
		}
		
			
		cout<<endl;
		}	
		
}

Grading criterion: Declaration of variables
Rating A: correctly declares the variable n and other variables as required
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==1) {
    for (int i=1; i<=n; i++) {
        repeat(i-1) {
            cout << " ";
        }
        if (i%2==1) {
            repeat((n-i)/2) {
                cout << "O";
                cout << "X";
            }
            cout << "O" << endl;
        }
        if (i%2==0) {
            repeat((n-i)/2 + 1) {
                cout << "O";
                cout << "X";
            }
            cout << " " << endl;
        }
    }
}
    if (n%2==0) {
    for (int i=1; i<=n; i++) {
        repeat(i-1) {
            cout << " ";
        }
        if (i%2==0) {
            repeat((n-i)/2) {
                cout << "O";
                cout << "X";
            }
            cout << "O" << endl;
        }
        if (i%2==1) {
            repeat((n-i)/2 + 1) {
                cout << "O";
                cout << "X";
            }
            cout << " " << endl;
        }
    }
}
}

Grading criterion: Declaration of variables
Rating A: correctly declares the variable n and other variables as required
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 isO = true;
        repeat(i) cout<<" ";
        repeat(n-i){
            if(isO){
                cout<<"O";
                isO =false;
            }   
            else{
                cout<<"X";
                isO =true;
            }
        }
        cout <<endl;
    }
}

Grading criterion: Declaration of variables
Rating A: correctly declares the variable n and other variables as required
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>
char print_letters(int num_O , int num_X ,  int num_spaces) {
   if (num_O =='1') { cout<<"O";}
   if (num_X=='1') { cout<<"X"; }
   if (num_spaces=='1') { cout<<" "; }
   cout<<" "<<"O"<<"X";
}
main_program{
    int num_O=0;
    int num_X=0;
    int num_spaces=0;
    int n;
    cin>>n;
    for(int i=0;i<n;i++) {
        num_O = n-1-i;
        num_X = n-2-i;
        num_spaces = i-1;
        cout<< print_letters(num_O,num_X , num_spaces);
    }
}

Grading criterion: Declaration of variables
Rating A: correctly declares the variable n and other variables as required
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=1;j<=i;j++)//spaces
        {
            cout<<" ";
        }
        for(int k=i;k<n;k++)//circles
        {
            if((k+i)%2==0){
            cout<<"O";
            }
            else if((k+i)%2!=0){
                cout<<"X";
            }
        }
    cout<<endl;
    }
}

Grading criterion: Declaration of variables
Rating A: correctly declares the variable n and other variables as required
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 (i>j){
    cout<<" ";
}
else if (i<=j && (i+j)%2==0){
    cout<<"O";
}
else {
    cout<<"X";
}
        }
        cout<<endl;
    }
}

Grading criterion: Declaration of variables
Rating A: correctly declares the variable n and other variables as required
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<i;j++){cout<<" ";}
        for(int j=0;j<n-i;j++){
            if(j%2==0)cout<<"O";
            else cout<<"X";
        }cout<<endl;
    }
}

Grading criterion: Declaration of variables
Rating A: correctly declares the variable n and other variables as required
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 i=1; i <= n; i++){
        repeat(i-1){cout << " ";}
        if(i % 2==0) {repeat((n-i+1)/2){cout << "ox";}}
        else if(i % 2!=0) {repeat((n-i)/2) {cout << "ox";}
        cout << "o";} 
        cout << endl;
        } }
    else if(n % 2 ==0){
    for(int j=1; j <= n; j++){
        repeat(j-1){cout << " ";}
        if(j % 2==0) {{repeat((n-j)/2){cout << "ox";}}
        cout << "o";} 
        else if(j % 2!=0) {repeat((n-j+1)/2) {cout << "ox";}
        } 
        cout << endl;}
}
}

Grading criterion: Declaration of variables
Rating A: correctly declares the variable n and other variables as required
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 , o , x;
    for(i=1,i<=n,i++){
        if i=2i-1 ;
        cout<<"o"<<endl;
else 
cout<<"X"<<endl;

    }
cin>>n;
}

Grading criterion: Declaration of variables
Rating A: correctly declares the variable n and other variables as required
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 i,j,n;
    cin >>n ;
     
for(int i=1; i<=n; i++)
{
    for(int j=1; j<=n; j++){

if (( (i%2 == 0 && j%2 == 0) && ( i<=j) )  || (( i%2 != 0 && j%2 != 0) && ( i<=j) ))
cout << "O";
if ( ((i%2 == 0 && j%2 != 0) || (i%2 != 0 && j%2 == 0)) && (i<j)) 
cout << "X";

if ( i > j)
cout << " " ; 

    }
cout << endl;    
}
return 0;
}

Grading criterion: Declaration of variables
Rating A: correctly declares the variable n and other variables as required
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 i;
        int j;
        for(i=n;i>=1;--i){
            repeat(n-i){
                cout<<" ";
            }
            for(j=0;j<n-(n-i);j++){
                if((j)%2==0){
                    cout<<"O";
                }
                else{
                    cout<<"X";
                }
                
            }
            cout<<endl;
        }
    }

Grading criterion: Declaration of variables
Rating A: correctly declares the variable n and other variables as required
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 nsp=0;
    int nst=n;
    for(int i=1;i<=n;i++){
        for(int k=1;k<=nsp;k++){
            cout<<" ";
        }
        nsp++;
        for(int j=1;j<=nst;j++){
            if(j%2!=0) cout<<"O";
            else cout<<"X";
        }
        nst--;
        cout<<endl;
    }
}

Grading criterion: Declaration of variables
Rating A: correctly declares the variable n and other variables as required
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;
    char ch='O';
    cin>>n;
    int cnt=n;
    for(int i=1;i<=n;i++){
        for(int k=1;k<=(n-cnt);k++){
            cout<<" ";
        }
        for(int j=1;j<=cnt;j++){
            cout<<ch;
            if(((j+1)%2)!=0)
            ch='O';
            else
            ch='X';
        }
        ch='O';
        cnt--;
        cout<<"\n";   
    }
}

Grading criterion: Declaration of variables
Rating A: correctly declares the variable n and other variables as required
Rating B: Some issue
Rating C: Major issue
Rating D: 0
Assigned grade: A