在C中将float与int相乘

Question

#include <stdio.h>
int main(){
    float var = 0.612;
    printf("%f\n",var);
    printf("%f\n",var*100);
    return 0;
}

o/p

0.612000
61.199997

I found that for JavaScript, we have .tofixed() method.

How do we get a fix for this in C?

Answer 1

You can specify the precision when printing:

printf("%.3f\n", 100 * var);

Since the exact number you're having probably isn't representable in the float itself, there is no operation you can do on the number itself to "remove" the decimals, it's all a matter of how you choose to present the data.