Write a 2-minute countdown.

#include <stdio.h>
#include <stdlib.h>
#include<windows.h>
int main()
{   int a;
    a=120;
    while(a>=0)
      {
        system("cls");
        printf("%d:%d",a/60,a%60);
        a=a-1;
        Sleep(1000);
      }
    

   
    return 0;
}

Experience ： The idea of solving problems is very important , Minutes is equivalent to 60 Base number , The first half is the integer part of the division , The second half is remainder , It can be extended to other decimal countdown .