例如
定义了如下的结构
typedef struct student
{
int age;
int score;
}STUDENT;
那么则有
STUDENT stu1;
就相当于struct student stu1;
上⾯的结构也可以直接定义为:
typedef struct
{
int age;
int score;
}STUDENT;
然后将STUDENT作为新类型使⽤,⽐如STUDENT stu1;
typedef声明新的类型来代替已有的类型的名字。
如:
typedef int INTEGER;
下⾯两⾏等价
int i;
INTEGER i;
可以声明:
typedef struct
{
int age;
int score;
}STUDENT;
定义变量:
记住我如果写成
typedef struct student
{
int age;
int score;
}STUDENT;
下⾯三⾏等价:
STUDENT stu;
struct student stu;
student stu;
1 #include <stdio.h>
2 #include <ctype.h>
3 #include <conio.h>
4
5void main()
6 {
7char letter; // Letter typed by the user
8
9 printf("Do you want to continue? (Y/N): ");
10
11 letter = getch(); // Get the letter
12 letter = toupper(letter); // Convert letter to uppercase
13
14while ((letter != 'Y') && (letter != 'N'))
15 {
16 putch(3); // Beep the speaker
17 letter = getch(); // Get the letter
18 letter = toupper(letter); // Convert letter to uppercase
19 }
20
21 printf("\nYour response was %c\n", letter);
22 }
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