C language daily question - xiaolele alarm clock (niuke.com)

describe

Xiaolele is lazy , He wants to sleep now , Then go to study . He knows the moment , And how long you want to sleep , I want to set an alarm clock to wake him up and study , But he's so stupid , I don't know when to set the alarm clock , Please help him .( Only time and minutes are considered , Regardless of the date )

Input description ：

Enter the current time and the length of sleep k（ Company ：minute）, Separate... With spaces in the middle .

Input format ：hour:minute k( Such as hour or minute The value of is 1, Input is 1, instead of 01)

(0 ≤ hour ≤ 23,0 ≤ minute ≤ 59,1 ≤ k ≤ 109)

Output description ：

For each group of input , Output the time that the alarm clock should set , The output format is standard time representation （ Both instant and minute are composed of two Who said , The number of digits is not enough. Use the leading 0 A filling ）.

Example 1

Input ：

0:0 100

Output ：

01:40

Example 2

Input ：

1:0 200  Output ：

04:20

#include<stdio.h>
int main()
{
	int a, b, c, d;
	scanf("%d:%d %d", &a, &b, &c); // When you enter three numbers that are starting   Minutes and set length of time , In minutes 
	d = a + (b + c) / 60;      //（b+c）/60  Add up the values in minutes, convert them to hours, and then +a Add the original tense ,d= Final time position 
	printf("%02d:%02d", d % 24,(60 * a + b + c - 60 * d)%60);//d%24 Yes 24 Take the surplus to prevent exceeding 24 Hours ,60*a+b+c-60*d // 60*a Convert the number on the time bit into bit division , Again +b+c Divide all digitization into ,-60*d Total minutes minus   Length of time in time position , The rest is naturally the duration of quantile , Yes 60 Remainder , To prevent exceeding 60
	return 0;
}

Be careful ： Take the remainder of the time position , Take the remainder of the quantile , To prevent exceeding 24 and 60