Proper Decimal Problem?

Question

#include <stdio.h>

int main (){
    float M=2E30, G=6.67E-11, m=6E24, r=1.5E11;

    float F= (G*M*m)/(r*r);

    printf("F is %f",F);
    return 0;
}

I am trying to print the value of F with two decimal precision. Could anyone help me please?

Short answer: replace %f with %.2f. If that's not exactly what you want, look into the various modifiers available in printf. — Simon B, Feb 11 '15 at 09:37

score 4 · Answer 1 · edited Feb 11 '15 at 11:44

4

For two decimal precision, change your printf statement as below

printf("F is %.2f", F);

read this for more information.

edited Feb 11 '15 at 11:44

Iharob Al Asimi

52,653
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answered Feb 11 '15 at 10:59

Shivaraj Bhat

841
2
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score 0 · Answer 2 · answered Feb 11 '15 at 15:03

You should try this:

printf("F is %0.2f",F);

The 0 in %0.2f tells that the output need not to be right justified and the 2 after the decimal tells that there should be only 2 digits after the decimal in the output. Basically %0.nf allows us to set a precision of n digits after the decimal in the output.

Hope this helps.

Proper Decimal Problem?

2 Answers2