How to print odd/even next to the multiples of a table asked by user in a C program

Question

#include <stdio.h>
int main()
{
    int n, range, i;
    printf("Enter an integer to find multiplication table: ");
    scanf("%d",&n);
    printf("Enter range of multiplication table:");
    scanf("%d",&range);
    for(i=1;i<=range;++i)
{
    printf("%d * %d = %d\n", n, i, n*i);
}
return 0;

}

I need to display odd next to multiples that are odd and even next to even multiples.

Yann · Answer 1 · 2014-06-16T11:08:49.187

1

Use the modulo

if ((n*i)%2 == 0)
  printf("EVEN : %d * %d = %d\n", n, i, n*i);
else
  printf("ODD : %d * %d = %d\n", n, i, n*i);

edited Jun 16 '14 at 11:08

answered Jun 16 '14 at 09:49

Yann

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Mahesh Bansod · Accepted Answer · 2014-06-16T14:33:50.510

1

Modify your printf() statement to:

printf ( "%d * %d = %d : %s\n", n, i, n*i, (n*i % 2 == 0) ? "EVEN" : "ODD" );

The modulus operator gives the remainder of n divided by 2.

edited Jun 16 '14 at 14:33

answered Jun 16 '14 at 09:54

Mahesh Bansod

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(n*i) is the one that needs to be checked, I was thinking of replacing the "i" in the code with "(n*i)" , will test it when I go home and see if it works. – Muroo Jun 16 '14 at 10:20
I have editted the code and replaced 'i' to 'n*i'. I hope it works. – Mahesh Bansod Jun 16 '14 at 14:36

score 1 · Answer 3 · answered Jun 16 '14 at 10:06

1

The best way to check if a number is even or odd is by using bitwise operators.

if (i & 1) { // It's odd }

else { //it is even }

answered Jun 16 '14 at 10:06

PG1

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How to print odd/even next to the multiples of a table asked by user in a C program

3 Answers3