size.cc

资深C++讲师授课代码

#include <iostream>
#include <cstring>
using namespace std;

int main(int argc, char* argv[])
{
	if(argc!=2)
	{
		cout << "只能带一个选项" << endl;
		cout << argv[0] << " -s|m|l|xl" << endl;
	}
	else
	{
		if(strcmp(argv[1], "-s")==0)
		{
			cout << "您选择的是小号" << endl;
		}
		else if(strcmp(argv[1], "-m")==0)
		{
			cout << "您选择的是中号" << endl;
		}
		else if(strcmp(argv[1], "-l")==0)
		{
			cout << "您选择的是大号" << endl;
		}
		else if(strcmp(argv[1], "-xl")==0)
		{
			cout << "您选择的是超大号" << endl;
		}
		else
		{
			cout << "无效的选项!" << endl;
			cout << argv[0] << " -s|m|l|xl" << endl;
		}
	}
}