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

Here we will see how to write a one line C function that can round floating point numbers. In order to solve this problem, we have to follow the following steps.

• Get the number
• If the number is positive, add 0.5
• Otherwise, subtract 0.5
• Use type conversion to convert the floating point value Convert to integer

Example

#include <stdio.h>
   int my_round(float number) {
   return (int) (number < 0 ? number - 0.5 : number + 0.5);
}
int main () {
   printf("Rounding of (2.48): %d</p><p>", my_round(2.48));
   printf("Rounding of (-5.79): %d</p><p>",my_round(-5.79));
}

Output

Rounding of (2.48): 2
Rounding of (-5.79): -6

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