# C abs() Method Calculate Absolute Value

The C programming language provides the `abs()` method in order to calculate the absolute value of a number or integer. Absolute value is a positive or non-negative value for the specified number. Event the provided value is a negative integer it is converted into positive as the absolute value.

## abs() Method Syntax

The abs() method has very simple syntax where the integer value or integer variable is provided to the abs() method as a parameter. The return type of the abs() method is an integer which is the absolute value.

``int abs(INT)``
• INT is the integer variable or integer value.

## Calculate Absolute Value of Integer Variable

In this example, we will calculate the absolute value of the integer variables `-3` and `3` .

``````#include <stdio.h>
#include <stdlib.h>

int main () {
int a, b, c, d;

c = -3;

d = 3;

a = abs(c);
printf("Absolute value of a = %d\n", a);

b = abs(d);
printf("Absolute value of b = %d\n", b);

return(0);
}``````

## Calculate Absolute Value of Integer

The abs() method can be also used to calculate the absolute value of the integer values `-3` and `3`.

``````#include <stdio.h>
#include <stdlib.h>

int main () {
int a, b;

a = abs(3);
printf("Absolute value of a = %d\n", a);

b = abs(-3);
printf("Absolute value of b = %d\n", b);

return(0);
}``````