My program is the tempera trun to the Huashi C:
#include "iostream"
using namespace std;
class tempera
{
public:
float cels;
float change()
{
return (9*cels)/5+32;
}
};
void main()
{
tempera c;
cout << "输入摄氏温度值:"<<endl;
cin >>c.cels;
cout << "转化为华氏温度为:" << c.change() <<"度" <<endl;
.........................................................................................................................
I used the g++ to build this program ,It always says "main must retrun int ".
bd@bd-desktop:~/Documents$ g++ -o tempera tempera.cpp
tempera.cpp:17: error: ‘::main’ must return ‘int’
bd@bd-desktop:~/Documents$
it should be "int main()" instead of "void main(void)" and then put a "return 0" at the end of the function.
这不是程序的问题,而是编译器的问题
这是 C 语言标准的规定, 而 Dev C++ 严格的遵守这个规定.
DOS 版的 Turbo C 3 并不符合语言标准, 它没错误并不表示它是对的.
(注意:main前面的一定要是int,既然main前面加了int那么main函数里必须有return语句)