Method a: expressed in C language comes absolute value function:
If a is an integer of : ABS ()
#include<stdio.h> #include<math.h> int a=100,b; b=abs(a); printf("%d",b);
If a is a floating-point number: double type fabs ()
#include<stdio.h> #include<math.h> float a=99.9; float b; b=fabs(a); printf("%f",b);
Method Two: Write a function of their own, said:
#include <stdio.h> int abs(int t) { if (t>0) return t; else return -t; } int main() { int t = 0; scanf("%d",&t); printf("%d",abs(t)); return 0; }