The "practicality" of C++ to the C language increases

 First of all, I recommend a github for learning C language/C++, sharing C language/C introduction, learning route, e-book recommendation and download, video recommendation, small projects, dry goods articles, written test interviews, C language/C++ specifications, open source projects, etc. .

Address: C language/C++ learning platform

#include "iostream"
using namespace std;

//C语言中的变量都必须在作用域开始的位置定义！！
//C++中更强调语言的“实用性”，所有的变量都可以在需要使用时再定义。

int main11()
{
	int i = 0;

	printf("ddd");
	int k;
	system("pause");
	return 0;
}