C++ Program Help: This program reads in 3 numbers from the file "infile.txt", sums the numbers, and writes the sum to the file "outfile.txt".

Here's my source code:

#include #include //must include this header file for streams

using namespace std;

int main() { ifstream in_stream; ofstream out_stream;

//open the files in_stream.open("infile.txt"); out_stream.open("outfile.txt");

int first, second, third;

in_stream >> first >> second >> third;

//display the sum of the first 3 numbers out_stream

return 0; }

Here's my infile:

Here's my outfile:

My answer is that large number "1717986916"... but it should be 3. Why is my answer that large number?

nfile Notepad File Edit Format