When to use return function
When to use return function
Hey, im new to c++ when do I use the return 0; alot of people have told me after I am finished writing the program. Others have told me it is only under certain circumstances. What would these circumstances be?
Originally Posted by Sanity
Hey, im new to c++ when do I use the return 0; alot of people have told me after I am finished writing the program. Others have told me it is only under certain circumstances. What would these circumstances be?
As for the return it's what you're wanting to get from the function.
Code:
int add(int i, int p)
{
return i + p;
}
Say you're do some file manipulation, reading some text files, doing a query searching for a specific value and the text file doesn't open. This is like the motherload of text files, 97KB big, thousands of lines, it has ALL your data, and the file doesn't open
Code:
#include <fstream>
#include <string>
#include <iostream>
int main()
{
std::ofstream fileRead;
std::string line;
fileRead.open("c:\\My Awesome Text File.txt");
if (!fileRead) {
std::cout << "Failed to open \"My Awesome Text File.txt\"\nClosing" << std::endl;
return 0;
}
/* process file like normal */
return 0;
}
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