输出
#include<bits/stdc++.h>
using namespace std;
signed main(){
cout<<"Hello World!"<<endl;
printf("Hello World!\n");
return 0;
}
输入
#include<bits/stdc++.h>
using namespace std;
signed main(){
int x,y;
int sum;
cout<<"Type a number:";
cin>>x;
cout<<"Type another number:";
cin>>y;
sum=x+y;
cout<<"Sum is:"<<sum;
return 0;
}
条件判断 —— if
#include<bits/stdc++.h>
using namespace std;
signed main(){
int time;
cin>>time;
if(time<10)cout<<"Good morning!"<<endl;
else if(time<20)cout<<"Good day!"<<endl;
else cout<<"Good evening!"<<endl;
return 0;
}
循环结构 —— for