Write a C program to find absolute value of a number entered through the keyboard.
Absolute Value
In mathematics, the absolute value or modulus |x| of a real number x is the non-negative value of x without regard to its sign. The absolute value of a number may be thought of as its distance from zero.
Note: abs() is a builtin method/function present in library/header file stdlib.h
Page Contents
1. If user enters/inputs a value of 5. Then the distance from 0 to 5 is 5 units. So the absolute value of 5 is 5. Mathematically its written as |5| = 5. Its read as Modulus 5 is 5.
2. If user enters/inputs a value of -5. Then the distance from 0 to -5 is 5 units. So the absolute value of -5 is 5. Mathematically its written as |-5| = 5. Its read as Modulus -5 is 5.
User Input:
Enter a positive or negative number
-14
Output:
Absolute Value of -14 is 14
Video Tutorial: C Program To Find Absolute Value of a Number
#include<stdio.h>
#include<stdlib.h>
int main()
{
int num;
printf("Enter a positive or negative number\n");
scanf("%d", &num);
printf("Absolute Value of |%d| is %d\n", num, abs(num));
return 0;
}
Output 1:
Enter a positive or negative number
14
Absolute Value of |14| is 14
Output 2:
Enter a positive or negative number
41
Absolute Value of |41| is 41
Output 3:
Enter a positive or negative number
-2
Absolute Value of |-2| is 2
Output 4:
Enter a positive or negative number
2
Absolute Value of |2| is 2
Output 5:
Enter a positive or negative number
-100
Absolute Value of |-100| is 100
Note: abs() works only for integer values and not for floating or double type data.
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