#include #include #define N 3 struct Student {char xuehao[10]; int banji; char name[20]; float grade1; float grade2; float grade3; }; int main() {struct Student st[N]={{"10001",11,"Zhang",99.5,88.5,89.5}, {"10002",12,"Yang",77.9,56.5,87.5}, {"10003",11,"Liang",92.5,99.0,60.5}}; int i,j=-1,k,l; char c='a'; char s[20]; scanf("%s",s); for(i=0;i