c round float

C Round Float in C Language

In the C programming language, the round() function is used to round a floating-point number to the nearest integer value. The round() function is part of the math library in C and is declared in the math.h header file.

Here is the syntax of the round() function:

double round(double x);

The round() function takes a double value as its argument and returns the rounded integer value.

Example:

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

int main() {
   double num = 3.7;
   double roundedNum = round(num);

   printf("Original number: %f\n", num);
   printf("Rounded number: %f\n", roundedNum);

   return 0;
}

Output:

Original number: 3.700000
Rounded number: 4.000000

In the example above, the round() function is used to round the num variable, which contains the value 3.7. The rounded value is then stored in the roundedNum variable and printed to the console.

Please note that the round() function rounds the number to the nearest integer value. If the fractional part of the number is exactly halfway between two integers, the function rounds to the nearest even integer.