[codes=c]  #include <stdio.h>     #include <ctype.h>     #include <mem.h>     #include <string.h>          #define MAX 100     #define TOAN 0     #define LY   1     #define HOA  2          struct sinhvien {       char mslop[5];       char hoten[35];       float diem[3];     } danhsach[MAX];     int n = 0;          void nhapmoi()     {       char mslop[5], tmp[3];       int i;       float diem[3];       do {         printf("\nCho biet ma so lop :…