1 /*  2  * Main.c  3  * B12-分支-12. 计算火车运行时间  4  *  Created on: 2014年6月4日  5  *      Author: Boomkeeper  6  *  7  ********测试未通过*******  8  */  9 #include <stdio.h> 10 #include <stdlib.h> 11  12 int startTime,arrTime; 13 int *p_startTime=&startTime; 14 int *p_arrTime=&arrTime; 15  16 /*将输入时间全部转化成分钟，再做时间差，算出运行的分钟数*/ 17 int changeMinute(int *time) 18 { 19     //printf("\nnow changMinute() starting...\n"); 20     int hour,minute,newtime; 21  22     hour=*time/100; 23     minute=*time%100; 24     newtime=hour*60+minute; 25     //printf("now changeMinute() is closing...\n"); 26     return newtime; 27 } 28  29 /*将运行时间（分钟数）再转成hh:mm形式*/ 30 void changeHour(int *runTime) 31 { 32     //printf("\nnow changeHour() is starting...\n"); 33     int runTimeHour,runTimeMinute; 34  35     runTimeHour=*runTime/60; 36     //printf("runTimeHour = %i\n",runTimeHour); 37     runTimeMinute=*runTime-runTimeHour*60; 38     //printf("runTimeMinute = %i\n",runTimeMinute); 39  40     printf("%02i:%02i\n",runTimeHour,runTimeMinute); 41     //printf("now changeHour() is closing...\n"); 42 } 43  44 /*如果没有跨过半夜12点*/ 45 void inOneDay() 46 { 47     //printf("\nnow inOneDay() is starting ...\n"); 48     int startTimeMinute=changeMinute(p_startTime); 49     //printf("startTimeMinute = %i\n",startTimeMinute); 50     int arrTimeMinute=changeMinute(p_arrTime); 51     //printf("arrTimeMinute = %i\n",arrTimeMinute); 52     int runtime=arrTimeMinute-startTimeMinute; 53     //printf("\nruntime in minute = %i\n",runtime); 54     int *runTime=&runtime; 55  56     changeHour(runTime); 57     //printf("now inOneDay() is closing ...\n"); 58  59 } 60  61 /*如果跨过半夜12点*/ 62 void inTwoDay() 63 { 64     //printf("\nnow inTwoDay() is starting ...\n"); 65     int startTimeMinute=changeMinute(p_startTime); 66     //printf("startTimeMinute = %i\n",startTimeMinute); 67     int arrTimeMinute=changeMinute(p_arrTime); 68     //printf("arrTimeMinute = %i\n",arrTimeMinute); 69     int runtime=24*60-(startTimeMinute-arrTimeMinute); 70     //printf("\nruntime in minute = %i\n",runtime); 71     int *runTime=&runtime; 72  73     changeHour(runTime); 74     //printf("now inTwoDay() is closing ...\n"); 75 } 76  77 /*判断输入数据的合法性*/ 78 void judge(int *p_startTime,int *p_arrTime) 79 { 80     //printf("now judge() is starting...\n"); 81     if(*p_startTime<0 || *p_startTime>2359) 82         exit(0); 83     if(*p_arrTime<0 || *p_arrTime>2359) 84         exit(0); 85     if(*p_startTime == *p_arrTime) 86     { 87         printf("24:00\n");//这里到底算不算在同一天内？不管怎么改，测试结果仍一样 88         exit(0); 89     } 90     if(*p_startTime > *p_arrTime) 91         inTwoDay(); 92     else 93         inOneDay(); 94     //printf("now judge() is closing...\n"); 95 } 96  97 int main() 98 { 99     scanf("%4i %4i",p_startTime,p_arrTime);100     //printf("get startTime=%i,arrTime=%i\n\n",*p_startTime,*p_arrTime);101 102     judge(p_startTime,p_arrTime);103 104     return 0;105 }