Language C
Description It asks the user for two numbers, and it says whether the first is a multiple of the second.
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#include <stdio.h>
#include <stdlib.h>

int main (void)
{
    int a, b;
    printf ("Enter the value of a: ");
    scanf ("%d", &a);
    (void) getchar ();
    printf ("Enter the value of b: ");
    scanf ("%d", &b);
    (void) getchar ();
    if(b%a==0)
        printf ("The first number is a multiple of the second one.\n");
    else
        printf ("The first number is not a multiple of the second one.\n");
    putchar ('\n');
    system ("pause");
    return EXIT_SUCCESS;
}