案例1：?

#include <stdio.h> #include <string.h> #include <malloc.h>typedef int zhangsan; //為int在多取一個名字 zhangsan等價于intstruct Student{int sid;char sname[100];char sex;} ST;int main() {int i = 10; //等價于zhangsan i=10zhangsan j = 20;printf("%d", j);char c = '\0';printf("%c\n", c);printf("c輸出得：%d\n", (int)c);struct Student st;struct Student * ps = &st;ST.sid=12;ST.sex = 'n';strcpy_s(ST.sname , "lisi");printf("%c\n", ST.sex);printf("%d\n", ST.sid);printf("%s\n", ST.sname);while (true){}return 0; }

?

案例2：

#include <stdio.h> #include <string.h> #include <malloc.h>typedef int zhangsan; //為int在多取一個名字 zhangsan等價于inttypedef struct Student{int sid;char sname[100];char sex;} ST;int main() {int i = 10; //等價于zhangsan i=10zhangsan j = 20;printf("%d", j);char a = '\0';printf("%c\n", a);struct Student st;struct Student * ps = &st;ST st2; //等價于 struct Student st;st2.sid = 12;st2.sex = 'n';strcpy_s(st2.sname, "lisi");printf("%c\n", st2.sex);printf("%d\n", st2.sid);printf("%s\n", st2.sname);while (true) {}return 0; }

?案例3：

#include <stdio.h> #include <string.h> #include <malloc.h>typedef int zhangsan; //為int在多取一個名字 zhangsan等價于inttypedef struct Student{int sid;char sname[100];char sex;} * PST; //等價于struct Student * int main(void) {struct Student st;PST ps = &st;ps->sid = 99;printf("%d\n", ps->sid);while (true) {}return 0; }

?

案例4：

#include <stdio.h> #include <string.h> #include <malloc.h>typedef int zhangsan; //為int在多取一個名字 zhangsan等價于inttypedef struct Student {int sid;char sname[100];char sex;} *PSTU,STU; //PSTU等價于struct Student * （PSTU表示結構體指針）,STU等價于struct Student st （結構體本身）int main(void) {STU st;PSTU ps = &st;ps->sid = 99;printf("%d\n", ps->sid);while (true) {}return 0; }

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