题解

#include<iostream>
using namespace std;
int main(){
    int sum=0;
    for(int i=1;i<=100;i++){
        sum+=i;
    }
    cout<<sum;
    return 0;
}

#include<iostream>
using namespace std;
int main(){
    int sum=0,i=1;
    while(i<=100){
        sum+=i;
        i++;
    }
    cout<<sum;
    return 0;
}

#include<iostream>
using namespace std;
int main(){
    cout<<5050;
    return 0;
}

print(5050)