(07.12.23) End Sem

#include<stdio.h>
void error(){
        printf("This is an invalid sudoku square.\n");
        return;             fgets(content,1000,file)
}
struct player{
    char name[20];
    int age;
};

void main(){
      printf("WELCOME TO SUDOKU CHECKER!\n");
      struct player p;
      printf("Please enter your name:\n");
      scanf("%s",p.name);
      printf("Please enter your age:\n");
      scanf("%d",&p.age);


        int ssq[9][9];
        int num;
        struct errormsg ;
                printf("Please enter the number of rows you want in the matrix:\n(Remember that the number should be between 3 and 10)\n");
        scanf("%d",&num);
        if (num>9){
                printf("Please enter a value equal to or less than 9\n");
                return;
        }
        if (num<4){
                printf("Please enter a value greater than 3\n");
                return;
        }
        for (int i=0;i<num;i++){
           for (int j=0;j<num;j++){
               printf("Please enter value for row %d column %d: ",i+1, j+1);
               scanf("%d",&ssq[i][j]);
           }
        }

        for (int i=0;i<num;i++){
           for (int j=0;j<num;j++){
               printf("%d\t",ssq[i][j]);
               }
           printf("\n");
        }

        for (int i=0;i<num;i++){
           for (int j=0;j<num;j++){
              if(ssq[i][j]>num||ssq[i][j]<1){
                    printf("This is an invalid sudoku square.");                      ;
                    return;
              }
           }
        }

       int temp;
       int temp2;
       for (int i=0;i<num;i++){
          for (int j=0;j<num;j++){
            temp=ssq[i][j];
            temp2=ssq[i][j];
            for (int k=0;k<num;k++){
              if (k!=j){
                if (temp==ssq[i][k]){
                     printf("This is an invalid sudoku square.");
                     return;
                }
              }
              if (k!=i){
                if (temp==ssq[k][j]){
                     printf("This is an invalid sudoku square.");
                     return;
                }
              }
            }
          }
       }

      printf("This is a valid sudoku square.");
 }