How to pass an argument to the C++ application - c++

Question

In Java you can pass an argument with void main(String[] args).
Find run configuration in Eclipse, put arguments and run a program, but in C++ there is just int main() how to pass arguments to the program using Visual Studio 2010?

Answer 1

While int main() is correct, you can use int main(int argc, char *argv[]) or int main(int argc, char **argv) to get the argument count with argc and an array of char arrays (strings) with argv.
Please note that the first argument will always be the path to the program you are running.

Answer 2

It'you can refer to any basic c++ programs in any tutorial for this.
argc- number of argument count
argv- argumant list
Below is sample code to parse argument list.
#include <iomanip>
#include <iostream>
using namespace std;
int main( int argc, char* argv[] )
{
cout << "The name used to start the program: " << argv[ 0 ]
<< "\nArguments are:\n";
for (int n = 1; n < argc; n++)
cout << setw( 2 ) << n << ": " << argv[ n ] << '\n';
return 0;
}
If you are using visual studio there is a command line property using which you can pass commandline parms

Answer 3

Sample code :
// command_line_arguments.cpp
// compile with: /EHsc
#include <iostream>
using namespace std;
int main( int argc, // Number of strings in array argv
char *argv[], // Array of command-line argument strings
char *envp[] ) // Array of environment variable strings
{
int count;
// Display each command-line argument.
cout << "\nCommand-line arguments:\n";
for( count = 0; count < argc; count++ )
cout << " argv[" << count << "] "
<< argv[count] << "\n";
}
Read more about argument parsing in c++ read Parsing C++ Command-Line Arguments in MSDN. there are example input output also.