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

Scope resolution operator, what are the significances of scope resolution o...

what are the significances of scope resolution operator? Illustrate with example

Pawnbroker software to be written in vb, Pawnbroker software to be written ...

Pawnbroker software to be written in VB Project Description: I want software written for my pawnshop. I am currently using a program called pawnboss but would like to have my

C program for bubble sort, C program for bubble sort: void main() {...

C program for bubble sort: void main() { int i,j,k,a[10],n; clrscr(); printf("How many values you want to enter\n"); scanf("%d",&n);  for(i=0;i  {  pri

Create a program for decision structure , Create the following program or p...

Create the following program or propose one of your own. The program must include at least one of each of the following. Decision structure Repetitive structure fu

Create a mathematical number guessing game, Create a mathematical number gu...

Create a mathematical number guessing game. Have the user prompt for the number of games that they want to play. Then each game consists of the following rules. a. The computer

Araay, create two array names and grade .in first array you have to store t...

create two array names and grade .in first array you have to store thease 10 names 1.a,2.3.r,4.s,5.l,6.k,7.n,8.b,9.z,10.d you have to enter grades for thease students.te program mu

Implementing Dynamic Binding for RPC, i didnt no how to write and how to im...

i didnt no how to write and how to implement and the programming can be done in C and execution should be done in UNIX

Program to implement a ftp client, Write a program in C to implement a FTP ...

Write a program in C to implement a FTP client that can interoperate with a default FTP server . The client should implement basic FTP commands GET PUT LIST DELE . GET -> to

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