Floating Point Issues - C Programming Questions and Answers

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We want to round off x, a float, to an int value, The correct way to do is

y = (int)(x + 0.5)

y = int(x + 0.5)

y = (int)x + 0.5

y = (int)((int)x + 0.5)

Answer : Option A

Explanation :

Rounding off a value means replacing it by a nearest value that is approximately equal or smaller or greater to the given number.

y = (int)(x + 0.5); here x is any float value. To roundoff, we have to typecast the value of x by using (int)

Example:

 #include <stdio.h>  int main () {   float x = 3.6;   int y = (int)(x + 0.5);   printf ("Result = %d\n", y );   return 0; }