Write a C program to find the absolute value of the given number entered by user.

Question

I couldn't have the idea to how to get absolute value of a number entered by user either negative or positive. If negative number entered then we have to change it in positive of it but how... Please explain programmers.... I want to know

Answer 1

You can use the abs() function from stdlib.h or fabs() from math.h for getting |x| of a number x :
x=abs(x), or x=fabs(x);

Alternatively, you can do :
if(x<0) x-=(2*x); // Saves |x| into x.

Answer 2

Can you post your code?

Answer 3

What is your problem? Get user input, calculate the absolute number or either?

Answer 4

x= x<0 ?-x: x;

Answer 5

Yes thats my problem

Answer 6

#include<stdio.h >
int main()
{
int n;
printf("Enter a number:") ;
scanf("%d", &n) ;
//After that what I do
}

Answer 7

Thanks buddy.... Kinshuk Vasisht

Answer 8

I uses alternative because I have to use conditional operator

Answer 9

Thanks KrOW