Question

Consider the following problem: given number of type double, we would like to extract the integer part and the fractional part. For example if double 1.25 is given, the integer part is 1 and the fractional party is 0.25. Propose a function prototype that takes a double number and produces the integer part and the fractional part and then write the code for the function.

Answer 1

#include <stdio.h>

// prototype
void fraction_part(double, int *, float *);

int main() {
    float num = 5.76, fraction;
    int integer;
    fraction_part(num, &integer, &fraction);
    printf("Integer part = %d\n", integer);
    printf("Fraction part = %f\n", fraction);
    return 0;
}

void fraction_part(double num, int *integer, float *fraction) {
    *integer = (int) num;
    *fraction = (float) (num - *integer);
}