abs in c

What is abs in c programming?

abs in c is used to find out absolute value of given number.

This function is defined in stdlib.h header file.

Prototype

#include<stdlib.h>
int abs(int m);

Parameter

abs function takes integral value as parameter.

Return value

This function returns absolute value of given integral value.

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Example program for abs in c

#include<stdio.h>
#include<stdlib.h>
int main()
{
 int x;
 x=abs(-100);
 printf("The absolute value of given integer is %d \n",x);
 return 0;
} 

While using gcc use below command to add math header.

gcc file_name.c -lm

Code explanation

abs function is called by passing the input value. The absolute value is printed on to the console.

abs() Man page

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Difference between abs and fabs in c

abs in c is used to find out the absolute value of a given number. fabs is used to find out the absolute value of the double type of data.

Prototypes are as follows

int abs(int m);

double fabs(double y);

abs( )	fabs( )
Used to find out absolute value of integer type of data.	Used to find out absolute value of double type of data.
int abs(int m);	double fabs(double y);

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