Struct is used as function parameter 2, struct function parameter

Struct is used as function parameter 2, struct function parameter

 

1 # define _ CRT_SECURE_NO_WARNINGS 2 # include <stdio. h> 3 # include <stdlib. h> 4 # include <string. h> 5 6 typedef struct Teacher 7 {8 char name [64]; 9 int age; 10 int id; 11} Teacher; 12 13 void printTeacher (Teacher * array, int num) 14 {15 int I = 0; 16 // print the instructor's age 17 for (I = 0; I <num; I ++) 18 {19 // printf ("age: % d \ n ", array [I]. age); 20 printf ("age: % d \ n", (* (array + I )). age); 21 // (array ++)-> age; 22} 23} // (* (arr Ay + I )). age24 25 void sortTeacher (Teacher * array, int num) 26 {27 int I, j; 28 Teacher tmp; 29 for (I = 0; I <num; I ++) 30 {31 for (j = I; j <num; j ++) 32 {33 if (array [I]. age <array [j]. age) 34 {35 tmp = array [I]; 36 array [I] = array [j]; 37 array [j] = tmp; 38} 39} 40} 41} 42 43 44 Teacher * createTeacher (int num) 45 {46 Teacher * tmp = NULL; 47 tmp = (Teacher *) malloc (sizeof (Teacher) * num); // Teacher Array [3] 48 If (tmp = NULL) 49 {50 return NULL; 51} 52} 53 54 void FreeTeacher (Teacher * p) 55 {56 if (p! = NULL) 57 {58 free (p); 59} 60} 61 62 int main () 63 {64 int I = 0; 65 int num = 3; 66 // Teacher Array [3]; // allocate memory in the stack 67 68 Teacher * pArray = NULL; 69 pArray = createTeacher (num); 70 71 for (I = 0; I <num; I ++) 72 {73 printf ("\ nplease enter age:"); 74 scanf ("% d", & pArray [I]. age); 75} 76 printTeacher (pArray, num); 77 sortTeacher (pArray, num); 78 printf ("sorted: \ n"); 79 printTeacher (pArray, num); 80/* 81 printTeacher (Array, num); 82 sortTeacher (Array, num); 83 printf ("sorted: \ n"); 84 printTeacher (Array, num); */85 FreeTeacher (pArray); 86 system ("pause"); 87 return 0; 88}