The result should be 2.0 6.0 but it's 2.00000 6.00000 in C. what to do?

Question

The result should be 2.0 6.0 but it's 2.00000 6.00000 in C. what to do?

Answer 1

Customize number of digits past the decimal point by specifying precision. Look particularly at the section covering precision in the following page

http://www.cplusplus.com/reference/cstdio/printf/