Thread: operators

i am a beginner in programming and i have a doubt:
what is wrong with the following code? the result is always 0...

Code:

#include <stdio.h>

float pi;
float raio;
float volume;
char line[100];

int main() {
	pi = 3.14159265;
	printf("qual o raio da esfera? ");
	fgets(line, sizeof(line), stdin);
	sscanf(line, "%f", &raio);
	volume = (3/4) * pi * (raio*raio*raio); /* 0.75 instead of 3/4 does the job... */
	printf("volume e %f\n", volume);
	return (0);
}

Originally Posted by laserlight

As it is integer division, 3/4 = 0

thanks for the reply.
what do i need to change to be able to use "3/4" then?

Originally Posted by hk_mp5kpdw

3.0/4.0 or just 0.75 instead.

I can believe that i made this mistake...
Thanks for the quick answers!