Declares two dimensional array, print the values, double all the values, and then display the new values - C Array

Description

Declares two dimensional array, print the values, double all the values, and then display the new values

Demo Code

#include <stdio.h>
#define ROWS 3  /*from w w  w.j ava  2 s . c o  m*/
#define COLS 5   

void times2(int ar[][COLS], int r);
void showarr2(int ar[][COLS], int r);
  
int main(void) {  
    int stuff[ROWS][COLS] = {   {1,2,3,4,5},  
                                {6,7,8,-22,13},  
                                {11,12,13,14,15}  
                            };  
    showarr2(stuff, ROWS);  
    putchar('\n');  
    times2(stuff, ROWS);  
    showarr2(stuff, ROWS);  
          
    return 0;  
}  
  
void times2(int ar[][COLS], int r)  {  
    int row, col;  
      
    for (row = 0; row < r; row++)  
        for (col = 0; col < COLS; col++)  
            ar[row][col] *= 2;  
  
}  
  
void showarr2(int ar[][COLS], int r){  
    int row, col;  
      
    for (row = 0; row < r; row++){  
        for (col = 0; col < COLS; col++)  
            printf("%d ", ar[row][col]);  
        putchar('\n');  
    }  
}

Result

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