当前位置：网站首页>C language - elaborate on functions and structures

C language - elaborate on functions and structures

2022-04-21 16:34:00 【Sun Zhongming】

function

Function definition

Global variables

Define before all functions

#include<stdio.h>

int x=10;

int main(){
    
    printf("%d",x);
    return 0;
}

     1.
2.
3.
4.
5.
6.
7.
8.
9.

Local function

Internal function

#include<stdio.h>

int x=10;

int main(){
    int x=20;
    printf("%d",x);
    return 0;
}

     1.
2.
3.
4.
5.
6.
7.
8.
9.

main function

The main function , No matter where the main function is written , The whole program is from The main function Of The first statement Executive

Nesting of functions

#include<stdio.h>

int x=10;

int main(){
  	print();
    return 0;
}

void print(){
    printf("%d",x);
}

     1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.

Recursion of a function

#include<stdio.h>

int x=10;

void fun(){
    
    fun();
}

int main(){
   fun();
 
}

     1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.

Structure

Body access structure

adopt . perhaps ->

struct studentInfo{
    int id;
    char name[10];
    studentInfo* next;
}stu,*p;

// visit 

stu.id
stu->name


(*p).id
p->id

     1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.

Initialization of structure

// basic 
stu.id=1;
scanf("%d",&stu.id);

// Constructors 

struct studentInfo{
    int id;
    char sex;
    studentInfo(int _id,int _sex){
        id=_id;
        sex=_sex;
    }
};
// It can also be abbreviated 
struct studentInfo{
    int id;
    char sex;
    studentInfo(int _id,int _sex):id(_id),sex(_sex){}
};

student1=studentInfo(9527,man);

     1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.

版权声明
本文为[Sun Zhongming]所创，转载请带上原文链接，感谢
https://yzsam.com/2022/04/202204211544139048.html

当前位置：网站首页>C language - elaborate on functions and structures

C language - elaborate on functions and structures

function

Function definition

Structure

边栏推荐

猜你喜欢

随机推荐