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C Math trunc() Function

❮ Math Functions


Example

Return the integer part of different numbers:

printf("%f", trunc(0.60));
printf("%f", trunc(0.40));
printf("%f", trunc(5));
printf("%f", trunc(5.1));
printf("%f", trunc(-5.1));
printf("%f", trunc(-5.9));
Try it Yourself »

Definition and Usage

The trunc() function truncates a number, which means returning only the integer part of the number.

The trunc() function is defined in the <math.h> header file.


Syntax

One of the following:

trunc(double number);

Parameter Values

Parameter Description
number Required. Specifies a number.

Technical Details

Returns: A double value representing the integer part of a number.

❮ Math Functions


Related Pages

C Functions Tutorial

C Math Functions Tutorial


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