C++ examples for Function:Math Function
Using command-line arguments
#include <iostream> #include <fstream> using namespace std; int main( int argc, char *argv[] ) { if ( argc != 3 ) cout << "Usage: copyFile infile_name outfile_name" << endl; else { /*from w w w . j a va2s .co m*/ ifstream inFile( argv[ 1 ], ios::in ); // input file could not be opened if ( !inFile ) { cout << argv[ 1 ] << " could not be opened" << endl; return -1; } ofstream outFile( argv[ 2 ], ios::out ); // output file could not be opened if ( !outFile ) { cout << argv[ 2 ] << " could not be opened" << endl; inFile.close(); return -2; } char c = inFile.get(); // read first character while ( inFile ) { outFile.put( c ); // output character c = inFile.get(); // read next character } } // end else }