A+B for Input-Output Practice (IV)

#include<iostream>

using namespace std;

int main()

{

int i;

int num;

int a[100];

int total=0;

while(1){

total=0;

cin>>num;

if(num==0){

break;

}

for(i=0;i<num;i++){

cin>>a[i];

total=total+a[i];

}

cout<<total<<endl;

}

    return 0;

}