Program 127:To Add 'N' Matrices

Program 127:
 

#include<stdio.h>
main()
{ 
 int i,j,rows,col,flag=1,x;
 printf("Enter number of rows\n");
 scanf("%d",&rows);
  printf("Enter number of columns\n");
 scanf("%d",&col);
 int a1[rows][col],a2[rows][col],add[rows][col];
 //Taking input for 1st matrix
 printf("Enter Matrix 1\n");
 for(i=0;i<rows;i++)
 {
  for(j=0;j<col;j++)
  {
   scanf("%d",&a1[i][j]);
  }
 }
 do
 {
   //Taking input for 2nd matrix
  printf("Enter Matrix 2\n");
  for(i=0;i<rows;i++)
  {
  for(j=0;j<col;j++)
  {
   scanf("%d",&a2[i][j]);
  }
   }
    //Addition of matrix
   for(i=0;i<rows;i++)
   {
  for(j=0;j<col;j++)
  {
   add[i][j]=a1[i][j]+a2[i][j];
  }
   }
   
   for(i=0;i<rows;i++)
   {
  for(j=0;j<col;j++)
  {
  printf("%d\t",add[i][j]); 
  }
  printf("\n");
   }
   printf("Enter 1 to continue to add the above to another matrix else 0\n ");
   scanf("%d",&x);
   if(x==1)
   {
    flag=1;
    for(i=0;i<rows;i++)
    {
     for(j=0;j<col;j++)
     {
      a1[i][j]=add[i][j];
      add[i][j]=0;
     }
     }
   }
   else
   {
    flag=0;
   }
   
 }while(flag);
 
 printf("The final addition of matrices is\n");
 
   for(i=0;i<rows;i++)
   {
  for(j=0;j<col;j++)
  {
  printf("%d\t",add[i][j]); 
  }
  printf("\n");
   }
}

Explanation:

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 Output: