Question

Write a program in C that stores the result of all multiplications between 1 and 9 in a two-dimensional int array and then prints the contents of the array to the screen. Also, write some comments in the code.

Example:

Expected output: 1 4 6 7 8 8 1 12 14 16 18 4 3 6 9 12 15 18 21 24 27 4 8 12 16 20 24 28 32 36 5 1e 15 20 25 30 35 40 45 6 12 18 24 30 36 42 48 7 14 21 28 35 42 49 56 8 16 24 32 40 48 56 64 72 9 18 27 36 45 54 63 72 81

Answer 1

#include<stdio.h>
void main(){
   int a[9][9],m = 1,i,j,f; // variable declaration
   for(i = 0; i < 9; i++){
       f = 1; // initializing multiple with one
       for(j = 0; j < 9; j++){
           a[j][i] = m*f; // storing column wise
           f++; // increasing f upto 10
       }
       m++; // now go for next table
   }
   for(i = 0; i < 9; i++){
       for(j = 0; j < 9; j++){
           printf("%d\t",a[i][j]);
       }
       printf("\n");
   }
}

/* Output */

1 2 3 4 5 6 7 8 9
2 4 6 8 10 12 14 16 18
3 6 9 12 15 18 21 24 27
4 8 12 16 20 24 28 32 36
5 10 15 20 25 30 35 40 45
6 12 18 24 30 36 42 48 54
7 14 21 28 35 42 49 56 63
8 16 24 32 40 48 56 64 72
9 18 27 36 45 54 63 72 81

/* PLEASE UPVOTE ( THANK YOU IN ADVANCE ) */