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

C program for count sorted characters, # include stdio.h> # include coni...

# include stdio.h> # include conio.h> # include string.h> void main()   {           int i=0,j=0;           char a[100],temp;           clrscr();

Write a c program to input five numbers, Write a C program to input five nu...

Write a C program to input five numbers and print them out on a new line e.g 5, 10, 15, 20, 25 displayed as   5   10   15   20   25 #include stdio.h   void main()   {

Xmugler, #solution for decode the code for smuglers

#solution for decode the code for smuglers

Minimum shelf, how to find minimum number if shelves required

how to find minimum number if shelves required

Blanche has a fashion design company called BLB_Best_Clothin, Blanche has a...

Blanche has a fashion design company called BLB_Best_Clothing Pty. That she has just opened recently

Describe run-time type identification, The ability to verify at run time th...

The ability to verify at run time the type of an object by using the typed operator or the dynamic_cast operator.

Object Oriented Programming , You are required to give C++ implementation o...

You are required to give C++ implementation of following classes: 1. PropertyCategories 2. Plot 3. Flat 4. House Following is the description of all data member and member funct

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