武汉科技大学ACM ：1002: A+B for Input-Output Practice (II)

Problem Description

Your task is to Calculate a + b.

Input

Input contains an integer N in the first line, and then N lines follow. Each line consists of a pair of integers a and b, separated by a space, one pair of integers per line.

Output

For each pair of input integers a and b you should output the sum of a and b in one line, and with one line of output for each line in input. 

Sample Input

2
1 5
10 20

Sample Output

6
30

#include<iostream>
#include<string>
using namespace std;
int main()
{
    int n,a,b;
    int sum;
    string result;
    char s[100];
    cin>>n;
    for(int i=0;i<n;i++)
    {
        cin>>a;
        cin>>b;
        sum = a+b;
        sprintf(s, "%d",sum);//将整数转为字符串型
        result += s;
        result += "
";
    }
    cout<<result;
    return 1;
}