abs() : absolute value

abs(x)

Example with integer as inputs

#include <stdio.h>
#include <math.h>
int main(void){
     int   x,y;
     x=12;
     y=-35;
     x = abs(x);
     y = abs(y);
     printf("%d \n", x);
     printf("%d", y);
     return 0;
}

12 
35

Example with float variables by using fabs()

#include <stdio.h>
#include <math.h>
int main(void){
     float   x,y;
     x=12.35;
     y=-35.45;
     x = fabs(x);
     y = fabs(y);
     printf("%f \n", x);
     printf("%f", y);
     return 0;
}

12.350000
35.450001

Example with long variables by using labs()

#include <stdio.h>
#include <math.h>
#include <stdlib.h>
int main(void){
     long int    x,y;
     x=12.35;
     y=-35.45;
     x = labs(x);
     y = labs(y);
     printf("%ld \n", x);
     printf("%ld", y);
     return 0;
}

12.35
35.45

Example: Using abs() with User Input

#include <stdio.h>
#include <math.h>
int main(void){
    int x;
    printf("Enter an integer: ");
    scanf("%d", &x);
    printf("The absolute value of %d is %d\n", x, abs(x));
    return 0;
}

Enter an integer: -25
The absolute value of -25 is 25

Example: Handling Multiple Data Types

#include <stdio.h>
#include <math.h>
#include <stdlib.h>
int main(void){
    int x = -15;
    float y = -23.45;
    long z = -3456789;
    
    printf("abs(%d) = %d\n", x, abs(x));
    printf("fabs(%.2f) = %.2f\n", y, fabs(y));
    printf("labs(%ld) = %ld\n", z, labs(z));
    
    return 0;
}

abs(-15) = 15
fabs(-23.45) = 23.45
labs(-3456789) = 3456789