Matrix Multiplication

This is a matrix multiplication in c language
void main()
{

  int i,j,k,m,n,p,q,sum;;
  int a[10][10],b[10][10],c[10][10];
  
  //Matrix A size
 
  printf("Enter the size of the matrix A\n");
  scanf("%d%d",&m,&n);
  
  // Matrix B size
  
  printf("Enter the size of the matrix B\n");
  scanf("%d%d",&p,&q);
  
  // Matrix Multiplication Condition
  
  if(n!=p)
  {
    printf("Multiplication not possible\n");
    exit(0);
  }
  
  //Elements of A
  
  printf("Enter the elements of A\n");
  for(i=0;i<m;i++)
    for(j=0;j<n;j++)
      scanf("%d",&a[i][j]);
  
  //Elements of B
  
  printf("Enter the elements of B\n");
  for(i=0;i<p;i++)
    for(j=0;j<q;j++)
      scanf("%d",&b[i][j]);
  
  //Display Matrix A
  
  printf("The elements of matrix A are\n");
  for(i=0;i<m;i++)
  {
    for(j=0;j<n;j++)
      printf("%d\t",a[i][j]);
    printf("\n");
  }
  
  //Display matrix B
  
  printf("The elements of matrix B are\n");
  for(i=0;i<p;i++)
  {
    for(j=0;j<q;j++)
      printf("%d\t",b[i][j]);
    printf("\n");
  }
  
  //Multiplication proccess
  
  printf("Multiplication :\n");
  for(i=0;i<m;i++)
    for(j=0;j<q;j++)
    {
      sum=0;
      for(k=0;k<n;k++)
        sum+=a[i][k]*b[k][j];
      c[i][j]=sum;
    }
  
  //Display final matrix after multiplication
  printf("The final matrix : \n");
  for(i=0;i<m;i++)
  {
    for(j=0;j<q;j++)
      printf("%d\t",c[i][j]);
    printf("\n");
  }
}