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

Develop g-code generating software, Develop G-code generating software P...

Develop G-code generating software Project Description: I'm presently using Slicer on a polymer jetting 3d printer. The toolpaths were thought out for FDM printers and thus a

Area of curve, Write a program to find the area under the curve y = f(x) be...

Write a program to find the area under the curve y = f(x) between x = a and x = b, integrate y = f(x) between the limits of a and b. The area under a curve between two points can b

What are arrays, What are Arrays? Numerous applications require the pro...

What are Arrays? Numerous applications require the processing of multiple data items that have identical characteristics. In such circumstances it is frequently convenient to p

How virtual functions can be implemented in c++?, Normal 0 fals...

Normal 0 false false false EN-US X-NONE X-NONE

Vogels approximation transportation problem, Vogels approximation transport...

Vogels approximation transportation problem in c language source code

, Question 1 / 1 You have an N x N chessboard and you wish to place N king...

Question 1 / 1 You have an N x N chessboard and you wish to place N kings on it. Each row and column should contain exactly one king, and no two kings should attack each other (two

Compter graphices, program that generate university statistical bar graph u...

program that generate university statistical bar graph using 3d function

Require flowchart, I require a flowchart for push , & pop operation on stac...

I require a flowchart for push , & pop operation on stack using array

Filing in C++, how to search, display all data and delete data

how to search, display all data and delete data

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