Struct pointers are used as function parameters.

Struct pointers are used as function parameters.

 

1 # define _ CRT_SECURE_NO_WARNINGS 2 # include <stdio. h> 3 # include <stdlib. h> 4 # include <string. h> 5 6 // define a struct 7 // define a data type. Alias with fixed memory size, no memory allocated 8/* struct Teacher 9 {10 char name [5]; 11 int age; 12 }; */13 typedef struct Teacher14 {15 char name [64]; 16 int age; 17 int id; 18} Teacher; 19 20 21 struct Student22 {23 char name [64]; 24 int age; 25} s1, s2; // define the type and define the variable 26 27 struct28 {29 char name [64]; 30 int age; 31 32} s3, s4; // anonymous type definition variable 33 34 // three methods for initializing the variable 35 // define the variable and then initialize 36 // 37 Teacher t7 = {"aaaaa", 18, 01 }; // global 38 struct Student239 {40 char name [64]; 41 int age; 42} s5 = {"names", 21 }; 43 44 struct45 {46 char name [64]; 47 int age; 48 49} s6 = {"names", 30}; 50 51 52 void copyTeacher01 (Teacher *, teacher * from) 53 {54 * to = * from; 55} 56 int main () 57 {58 Teacher t1 = {"aaaa", 32, 01}; 59 Teacher t2; 60 t2 = t1; // action taken by the compiler 61 // C compiler provides a simple assignment operation 62 Teacher t3; 63 printf ("t2.name: % s \ n ", t2.name); 64 printf ("t2.age: % d \ n", t2.age); 65 copyTeacher01 (& t3, & t1); 66 printf ("t2.name: % s \ n ", t3.name); 67 printf ("t2.age: % d \ n", t3.age); 68 system ("pause"); 69 return 0; 70}