c语言（结构体）---实现学生信息输入，输出，查询
利用结构体实现学生信息的输入，输出，以及生日日期查询 #include<stdio.h>#define NUM 3//日期结构体typedef struct{int year;int month;int day;}DATE;//学生信息结构体typedef struct{int num;char name[20];DATE birthday;char department[50];char major[50];}STUDENT;//输入信息函数void inputStudent(STUDENT[]);//输出信息函数void outputStudent(STUDENT[]);//查询信息函数void searchStudent(STUDENT[],DATE);void main(){STUDENT s[NUM];DATE date;inputStudent(s);outputStudent(s);printf("n Enter a date(month,day) n");scanf("%d%d",&date.month,&date.day);searchStudent(s,date);}void inputStudent(STUDENT s[]){int i;for(i=0;i<NUM;i++){printf("n Enter a student infomation n");s[i].num = i+1;scanf("%s",&s[i].name);scanf("%d%d%d",&s[i].birthday.year,&s[i].birthday.month,&s[i].birthday.day);scanf("%s",&s[i].department);scanf("%s",&s[i].major);}}void outputStudent(STUDENT s[]){int i;printf("n printf all student infomation");for(i=0;i<NUM;i++){printf("n%4d%10s%8d%3d%3d%8s%8s",s[i].num,s[i].name,s[i].birthday.year,s[i].birthday.month,s[i].birthday.day,s[i].department,s[i].major);}}void searchStudent(STUDENT s[], DATE date){int i;printf("n searched in all student infomation");for(i=0;i<NUM;i++){if(s[i].birthday.month>date.month){printf("n%4d%10s%8d%3d%3d",s[i].num,s[i].name,s[i].birthday.year,s[i].birthday.month,s[i].birthday.day);continue;}if(s[i].birthday.month==date.month && s[i].birthday.day>date.day){printf("n%4d%10s%8d%3d%3d",s[i].num,s[i].name,s[i].birthday.year,s[i].birthday.month,s[i].birthday.day);}}printf("n");}