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

Bankers algorithm, creating a system having five process from p0 to p4 and ...

creating a system having five process from p0 to p4 and five resource types. create the need matrix use the safe algorithm to test if the system is in safe mode.

Saha, find the minimum total number of shelves

find the minimum total number of shelves

C program to add two polar coordinates, Aim: To implement a program to add...

Aim: To implement a program to add two polar coordinates using operator overloading. Code:                       #define PI 3.14 class polar {             double

Program to convert fraction to decimal, Program to convert fraction to deci...

Program to convert fraction to decimal: int main() {                 float num, denom;     // numerator and denominator of fraction                 float value;

FILES, My file pointer is going to the location which i specified and writi...

My file pointer is going to the location which i specified and writing the value but it is in next line so,please help me iam developing in visual studio6

Flash my terminal vx670, Flash my terminal vx670 Project Description: ...

Flash my terminal vx670 Project Description: Have VeriFone software need it to communicate with the vx670 through com port 1 it is not talking I'm not sure why have all the r

Want an ea project for jack bsher, Want an EA project for Jack Bsher Pro...

Want an EA project for Jack Bsher Project Description: New EA game Skills required   Android, C++ Programming, PHP, Metatrader, SQL

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