C+Primer+Plus++ 第五章 分钟转换成小时

//把分转换成小时
#include <stdio.h>
#define M_PER_H 60                    //常量用大写来表示
int main(void)
{
  int hour,min,time_m;

  printf("Convert minutes to hours and minutes!\n");
  printf("Now enter the number of minutes(<=0 to quit):\n");
  scanf（"%d",&time_m);               //先输入一个数值，用于开始循环
  while(time_m>0)
  {
    hour=time_m/M_PER_H;              //换算小时数<