5_2.cpp

C程序参考,简单易懂,是初学者不可少的参考资料

#include<stdio.h>
main()
 {
     int a,b;
     printf("Please enter a number:\n");
     scanf("%d",&a);
     b=a;
     if(b<0) b=-b;
     printf("The %d 's absolute value is:%d\n",a,b);
 }