Question

How to round floating point number and removes digits after decimal point in C

Answer 1

#include <stdio.h>
#include <math.h>
 
int main()
{
    double x = 4.311, y = 6.500, z = 9.811;
    
    printf("%.3f\n", trunc(x));
    printf("%.3f\n", trunc(y));
    printf("%.3f\n", trunc(z));
 
    x = -4.311, y = -6.500, z = -9.811;
    
    printf("%.3f\n", trunc(x));
    printf("%.3f\n", trunc(y));
    printf("%.3f\n", trunc(z));
 
    return 0;
}

/*
run:

5.000
7.000
10.000
-4.000
-6.000
-9.000

*/

 

70+ SQL courses for beginners and professionals