#include<stdio.h>
int main(void)
{
int num;
printf("Enter a number : ");
scanf("%d",&num);
if(num<0)
{
printf("Number entered is negative\n");
num=-num;
}
printf("Value of num is : %d\n", num);
return 0;
}
Output
Enter a number : -89
Number entered is negative
Value of num is : 89