AC代码
1 /*此题注意理解重载运算符的重要性*/ 2 /*直接写入程序以后若要相关修改较繁琐*/ 3 /*搞清楚什么时候要用到数组，为什么此题可以不用*/ 4 /*此题卡在COMPARE函数中，注意IF ELSE 仔细思考*/ 5 #include <stdio.h> 6 struct People 7 { 8 char name[10]; 9 int year; 10 int month; 11 int day; 12 } ; 13 typedef struct People People; 14 int Compare(People p1,People p2) //p1与p2相比 (返回1代表老，返回2代表相等，返回0代表小于） 15 { 16 int ret = 2; 17 if(p1.year < p2.year) 18 { 19 ret = 1; 20 }else 21 if(p1. year == p2.year) 22 { 23 if(p1.month < p2.month) 24 { 25 ret = 1; 26 }else 27 if(p1.month == p2.month) 28 { 29 if(p1.day < p2.day) 30 { 31 ret = 1; 32 }else 33 if(p1.day == p2.day) 34 { 35 ret = 2; 36 }else 37 ret = 0; 38 }else 39 ret = 0; 40 }else 41 ret = 0; 42 return ret; 43 } 44 int main () 45 { 46 int amount; 47 People oldest = {.year = 2014,.month = 9,.day = 6}; 48 People youngest = {.year = 1814,.month = 9,.day = 6}; 49 People old = {.year = 1814,.month = 9,.day = 6}; //必须要年轻于或等于这个日期 50 People young = {.year = 2014,.month = 9,.day = 6}; //必须老于或等于这个日期 51 52 People input; 53 int cnt = 0; 54 scanf("%d",&amount); 55 int i; 56 for(i = 0;i < amount;i++) 57 { 58 scanf("%s",&input.name); 59 scanf("%d/%d/%d",&input.year,&input.month,&input.day); 60 if((Compare(input,young) == 1 || Compare(input,young) == 2)&&(Compare(input,old) == 0 || Compare(input,old) == 2)) //大于等于1814 9 6 小于等于 2014 9 6 61 { 62 cnt++; 63 if(Compare(input,youngest) == 0 || Compare(input,youngest) == 2) //年轻于或等于最年轻的，则替换最年的数据 64 { 65 youngest = input; 66 } 67 if(Compare(input,oldest) == 1 ||Compare(input,oldest) == 2) //老于或等于最年长的，则替换最年长的数据 68 { 69 oldest = input; 70 } 71 72 } 73 } 74 if(cnt != 0) 75 { 76 printf("%d ",cnt); 77 printf("%s ",oldest.name); 78 printf("%s",youngest.name); 79 }else 80 if(cnt == 0) 81 { 82 printf("0"); 83 } 84 return 0; 85 86 87 88 }