Command-line arguments, C/C++ Programming

Assignment Help:

Command-line arguments are passed into programs using the arguments of main(). Here's a quick example, for a program called by typing

"progname file.txt 1 2.7":
#include
#include
using namespace std;
int main(int argc, char *argv[])
{
char *progname, *filename;
int value1;
float value2;
if (argc != 4) {
cerr << "usage: " << argv[0] << " file.txt int float" << endl;
exit(1);
}
progname = argv[0]; // argv[0] is the executable's name itself
filename = argv[1];
value1 = atoi(argv[2]); // convert C-string to int with atoi()
value2 = atof(argv[3]); // convert C-string to float with atof()
cout << progname << " " << filename << " " << value1 << " " << value2 <exit(0);
}


Related Discussions:- Command-line arguments

Source code, processing two jobs through 2 machine

processing two jobs through 2 machine

Padovan string, write a javaprogram to solve padovan string using java? ...

write a javaprogram to solve padovan string using java? program in java // aakash , suraj , prem sasi kumar kamaraj college program 1 : package test.padovanstring;

#pointers, what is the purpose of pointer ? what is the syntax? how it work...

what is the purpose of pointer ? what is the syntax? how it works?

How to write a global inline function, How to write a global inline functio...

How to write a global inline function First, let's get away from member functions for a moment and consider a global function.  To make a request that this function be in line:

I need plugin for amibroker using c++, I need plugin for amibroker using c+...

I need plugin for amibroker using c++ Project Description: Need to prepare plugin for amibroker using c++. Should be system bound after installing. System should show based o

Can you think of a condition where your program would crash , Can you think...

Can you think of a condition where your program would crash without attaining the breakpoint that you set at the starting of main()? A: C++ let for dynamic initialization of glo

How to create a data file, How to Create A Data File? A data file shoul...

How to Create A Data File? A data file should be created before it can be processed. A stream-oriented data file is able to be created in two ways. One is to create the file st

Explain compound assignment operators, Compound Assignment Operators Ap...

Compound Assignment Operators Apart from the binary and the unary arithmetic operators, we also have compound assignment operators. These are +=, -=, *=, /=, %=. Using these op

C++ project, project on business management

project on business management

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd