Solution of the Matrix

#include<stdio.h>
int main()
{

//Part i.

    int i, j, n;
    printf("Enter an integer number: ");
    scanf("%d",&n);
    printf("The dimension of array is = %d:%d\n\n",n,n);

    int A[n][n];
    //Taking input the array values
    for(i=0; i<n; i++) {
      for(j=0;j<n;j++) {
         printf("Enter the value for arr[%d][%d]:", i, j);
         scanf("%d", &A[i][j]);
      }
       printf("\n");
     }

   //Printing array elements
    printf("%d:%d Dimensional array elements:\n\n",n,n);
    for(i=0; i<n; i++) {
      for(j=0;j<n;j++) {
         printf("\t%d",A[i][j]);
      }
      printf("\n\n");

     }


//Part ii.

    int B[n][n];
    //Store the value of A in B
    for(i=0; i<n; i++) {
      for(j=0;j<n;j++) {
         B[i][j]=A[i][j];
        }
     }

    //Store the value of B in temp & interchange
    for (i = 0; i < n; i++){
    int temp = B[i][i];
        B[i][i] = B[i][n - i - 1];
        B[i][n - i - 1] = temp;
        }

     //Printing Interchange diagonal value
     printf("Interchange diagonals of the matrix A:\n\n");
     for (i = 0; i < n; i++){
        for (j = 0; j < n; j++){
            printf("\t%d",B[i][j]);
           }
            printf("\n\n");
        }


//Part iii.

      int C[n][n];
      // computing the transpose
      for (i=0; i<n; i++)
       for (j=0; j<n; j++){
          C[j][i] = B[i][j];
        }

      // printing the transpose
      printf("Transpose of the matrix B:\n\n");
      for (i=0; i<n; i++){
       for (j=0; j<n; j++){
         printf("\t%d",C[i][j]);
          if (j == n -1 )
          printf("\n\n");
      }
     }


//Part iv.

    int D[n][n];
    //Calculation of the operation 3A+2B-C
    for(i=0; i<n; i++) {
      for(j=0;j<n;j++) {
        D[i][j] = 3*A[i][j] + 2*B[i][j] - C[i][j];
      }
    }
    printf("The following operation 3A+2B-C:\n\n");
    for(i=0; i<n; i++) {
      for(j=0;j<n;j++) {
        printf("\t%d",D[i][j]);
      }
      printf("\n\n");
    }

    return 0;
}
    /*
    Prepared By:
    Mahmudur Rahman Tushar
    United International University
    Dept. Of CSE
    */