C++编程第46题（define学习）

//宏#define命令练习(1)
#include "stdio.h"
#define TRUE 1
#define FALSE 0
#define SQ(x) (x)*(x)
int main(){
    int num;
    int again=1;
    printf("\40: Program will stop if input value less than 50.\n");

    while(again){
        printf("\40: Please input number==>");
        scanf("%d",&num);
        printf("\40: The square for this number is %d \n",SQ(num));
        if(num>=50){
            again=TRUE;
        }else{
            again=FALSE;
        }
    }
    return 0;
}