Round off

Write a one-line C function to round floating point numbers

Algorithm: roundNo(num)1. If num is positive then add 0.5.
2. Else subtract 0.5.
3. Typecast the result to int and return.

Example:num = 1.67, (int) num + 0.5 = (int)2.17 = 2

C program:

/* Program for rounding floating point numbers */

# include<stdio.h>

int roundNo(float num)

{

    return num < 0 ? num - 0.5 : num + 0.5;

}

int main()

{

    printf("%d", roundNo(-1.777));

    getchar();

    return 0;

}