Question

How to extract the last N digits from a number in C

Answer 1

#include <stdio.h>
#include <math.h>

int last_digits(int num, int digits) {
    return num % (int)ceil(pow(10, digits));
}

int main(void) {
    int num = 4884721;
    int N = 3;

    int last = last_digits(num, N);
    printf("%d\n", last);

    return 0;
}


/*
run:

721

*/

 

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