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 stocastic expert advisor, Project Description: Need to develop a...

Project Description: Need to develop an expert advisor base on sthocastic oscilator with my own setting.. Very basic touch line OB/OS only but on my setting n condition Skill

Loan negotiation is usually not a straightforward ta, Ask question #Minimum...

Ask question #Minimum 1Loan negotiation is usually not a straightforward task. A type of loan is the discount installment loan. This type of loan has the following characteristics.

A palindrome is a string that reads the same from both the e, submitting so...

submitting solutions in C language should not use functions from / as these files do not exist in gcc

Write a program to calculate the timetable, Write a program to calculate th...

Write a program to calculate the timetable for numbers 1 -> 10 and display them as follows. Your solution should use for do loops      #include stdio.h void main() {    char p

Which one would you prefer - a macro or a function, Which one would you pre...

Which one would you prefer - a macro or a function? Actually it depends on the purpose of program! - In case of macros, corresponding code is inserted directly into your sou

I want im messenger, I would like to get you to collaborate in my project. ...

I would like to get you to collaborate in my project. We want a C programmer to Develop applications for Windows, the first application may be an Instant messenger encrypted in a w

Explain topologies for the network information system, Problem: a) Give...

Problem: a) Give and Illustrate with the help of diagrams, four topologies for the Network Information System (NIS). b) Give methods for creating user accounts and groups.

Stuctrue , To store a date use a structure that contains three members date...

To store a date use a structure that contains three members date, month and year. If the dates are equal then display message “Equal” otherwise “Unequal” Program structure: main()

Application to maintain soccer team information, Write a C program "team.c"...

Write a C program "team.c" that maintains information for a soccer team. The program will allow you to add and delete players from your team, to search your team for players by nam

Define a function in c program, Define a function in c program: int f1...

Define a function in c program: int f1() { static int x=10; return x; } int f2() { int y=5; return y; } extern int z; void f()     {

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