C++: Input/Output for Pairs of Numbers

From lines of input starting with a line containing the numbers of pairs to follows, followed by that number of pairs of integers separated by a space on separate lines from STDIN, output the sum of each pair to STDOUT.

Sample input with corresponding output

Input

5
1 2
10 20
-3 5
100 2
5 5

Output

3
30
2
102
10

Modified in order to take in all inputs and then give the output, the original gave the output for each pair immediately.

/*Modified by Abhishek Ghosh, 19th March 2014, Rotterdam*/
#include <iostream>
using namespace std;
 
int doStuff(int a, int b) {
    return a + b;
}
 
int main() {
 
	int t, **list;
 
	cin >> t;
 
	list = new int*[t];
 
	for(int j=0; j<t; j++){
 
		list[j] = new int[2];
		cin >> list[j][0]>> list[j][1];
 
	}
 
	cout << endl;
 
	for(int j=0;j<t;j++){
		cout << doStuff(list[j][0], list[j][1]) << endl;;
	}
	return 0;
}

Run as per given input

5
1 2
10 20
-3 5
100 2
5 5

3
30
2
102
10

SOURCE

Content is available under GNU Free Documentation License 1.2.