C Exercise Example 44
100 cases of classic C language
Topic: Learn to use external usage.
Program Analysis: None.
Source Code:
// Created by www.w3big.com on 15/11/9.
// Copyright © 2015年 本教程. All rights reserved.
//
#include <stdio.h>
int a,b,c;
void add()
{
int a;
a=3;
c=a+b;
}
int main()
{
a=b=4;
add();
printf("c 的值为 %d\n",c);
return 0;
}
The above example output is:
c 的值为 7