C++入门 输出Hello World
#include <iostream>using namespace std;int main(){
cout << "Hello, world!" << endl; return 0;}它等效于
#include <iostream>using namespace std;int main(){
cout << "Hello, world! \n"; return 0;}#include <iostream>using namespace std;int main(){
cout << "Hello, world!" << endl; return 0;}它等效于
#include <iostream>using namespace std;int main(){
cout << "Hello, world! \n"; return 0;}什么是注释?#include <iostream> int main()//我是注释 {/*我是注释*/ /*我 是 注 释 */ std::cout <&...
#include<iostream> using namespace std; int main() { cout << "The size of int is&nb...
#include<iostream> void print(); int main() { char a=0; for(a=0;a<20;a++) print(); return 0; } v...