#include <iostream>
using namespace std;
//变量声明
extern int a,b;
extern int c;
extern float f;
int main()
{
//变量定义
int a,b;
int c ;
float f;
a=10;
b=20;
c=a+b;
cout << c << endl;
f=70.0/3.0;
cout << f<< endl;
return 0;
}
c++ 变量声明
阅读 102
2023-01-13
#include <iostream>
using namespace std;
//变量声明
extern int a,b;
extern int c;
extern float f;
int main()
{
//变量定义
int a,b;
int c ;
float f;
a=10;
b=20;
c=a+b;
cout << c << endl;
f=70.0/3.0;
cout << f<< endl;
return 0;
}
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