What are command line arguments with example?

#include <stdio.h> void main(int argc, char *argv[] ) { printf("Program name is: %s\n", argv[0]); if(argc < 2){ printf("No argument passed through command line.\n"); } else{ printf("First argument is: %s\n", argv[1]);

Course Content

Introduction to C Programming

24m 32s

How to use LearnVern

3m 20s

Quiz : Introduction to C

Assignment : Introduction to C

3m 17s

Setting up C Environment

17m 24s

First Program in C

25m 16s

Quiz : Setting up C & First Program on C

15m

Assignment : Setting up C & First Program on C

3m 50s

Basic Syntax

21m 44s

Data Types in C Programming

26m 19s

Assignment : Structure of C

7m 38s

Variables in C Programming

20m 35s

Storage Classes in C Programming

28m 23s

printf() and scanf() Functions

22m 56s

Constants in C Programming

18m 8s

Quiz : Structure of C

30m

Operators in C Programming

23m 18s

Quiz : Operators in C

16m

Assignment : Operators in C

3m 20s

Decision Making- If Statement, If-else Statement

19m 5s

Decision Making - Nested If, Switch Statement, Nested Switch Statement

26m 7s

Entry Contolled Loops - For Loop, While Loop

29m 25s

Exit Controlled Loops - Do While Loop, Nested Loop

21m 9s

Break, Continue and Goto Statement

14m 54s

Assignment : Decision making and Flow Control

9m 4s

Quiz : Decision making and Flow Control

15m

Introduction to User Defined Functions

9m 28s

User Defined Functions -Function Definition, Function Declaration and Function Call

20m 55s

User Defined Functions - Functions and Parameters

19m 39s

User Defined Functions- Types of Parameters

20m 18s

Scope of a Variable

8m 3s

Quiz : Working with User Defined Functions

12m

Assignment : Working with User Defined Functions 1

5m 24s

Assignment : Working with User Defined Functions 2

14m 45s

Declaration & Initialization of Arrays

17m 30s

Accessing Array Elements

12m 33s

Types of Arrays

7m 27s

2D Arrays

11m

Multidimensional Arrays

25m 9s

Introduction to Pointers

16m 36s

Pointers with Functions

34m 18s

Pointer Types: Null Pointer, Wide Pointer, Void Pointer

24m 3s

Pointer Arithmetic

23m 28s

Array of Pointers

9m 58s

Working with Strings

17m 10s

Introduction to Structures

9m 47s

Basic Structure Example

10m 32s

Nested Structures, Array of Structures

27m 24s

Union in C Programming

12m 27s

Quiz : Derived Datatypes

12m

Typedef Function in C Programming

10m 7s

Quiz : Typedef Function

Assignment : Typedef Function

2m 57s

Overview of File Handling

15m 2s

Reading and Writing to Files

16m 45s

Assignment : File Handling in C

7m 14s

Basic File Handling

13m 2s

Bit Fields

23m 17s

File Input/Output Functions -I

6m 16s

File Input/Output Functions -II

34m 48s

Quiz : File Handling in C

12m

Preprocessors and Header Files

8m 29s

Assignment : Preprocessors and Header Files

3m 14s

Quiz : Preprocessors and Header Files

Type Casting

8m 24s

Assignment : Type Casting

2m 37s

Quiz : Type Casting

10m

Error Solving in C

23m 7s

Assignment : Error Solving in C

2m 41s

Quiz : Error Solving in C

13m

Recursive Functions in C

14m 53s

Assignment : Recursive Functions

3m 5s

Quiz : Recursive Functions

Variable Arguments in User Defined Functioncs

20m 2s

Assignment : Variable Arguments in User Defined Functions

3m 14s

Quiz : Variable Arguments in User Defined Functions

Memory Management

11m 34s

Assignment : Memory Management

2m 58s

Quiz : Memory Management

13m

Command Line Arguments

9m 12s

Quiz : Command Line Arguments

12m

Assignment : Command Line Arguments

2m 28s

Inbuilt Library Functions- Math.h Library

21m 39s

Inbuilt Library Functions- String.h Library, Time.h Library

33m 58s

Assignment : C Programming Libraries

4m 31s

Quiz : C Programming Libraries

Running and Debugging programs in C

19m 18s

Assignment : Running and Debugging Programs

3m 41s

Quiz : Running and Debugging Programs

Compilation and Execution

15m 53s

Quiz : Compilation and Execution

Assignment : Compilation and Execution

2m 59s

Advanced C Features: Macros

9m 8s

Advanced C Features: Linked List

12m 28s

Quiz : Macros and Linked List

12m

Assignment : Macros and Linked List

3m 19s

Printing a String

11m 4s

Swap 2 Numbers

24m 11s

Making a Calculator

18m 4s

Printing Patterns

35m 43s

Prime Check

19m 56s

Palindrome Check

18m 49s

Join 2 Strings

8m 21s

Reverse a string

14m 29s

Matrix Addition

14m 59s

Printing Array Elements and Addresses using Pointers

18m 57s

Structure for Student Data

12m 14s

Read and Write Data in a File

9m 4s

Course Summary

11m 7s

Interview Question

30m 24s

Career Guideline

2m 48s

Command Line Arguments

C Language Basic to Advance Course Command Line Arguments

Enroll Now For Free

Discussion

View Resources

clarguments

Course Content

Introduction to C Programming

24m 32s

How to use LearnVern

3m 20s

Assignment : Introduction to C

3m 17s

Setting up C Environment

17m 24s

First Program in C

25m 16s

Assignment : Setting up C & First Program on C

3m 50s

Basic Syntax

21m 44s

Data Types in C Programming

26m 19s

Assignment : Structure of C

7m 38s

Variables in C Programming

20m 35s

Storage Classes in C Programming

28m 23s

printf() and scanf() Functions

22m 56s

Constants in C Programming

18m 8s

Operators in C Programming

23m 18s

Assignment : Operators in C

3m 20s

Decision Making- If Statement, If-else Statement

19m 5s

Decision Making - Nested If, Switch Statement, Nested Switch Statement

26m 7s

Entry Contolled Loops - For Loop, While Loop

29m 25s

Exit Controlled Loops - Do While Loop, Nested Loop

21m 9s

Break, Continue and Goto Statement

14m 54s

Assignment : Decision making and Flow Control

9m 4s

Introduction to User Defined Functions

9m 28s

User Defined Functions -Function Definition, Function Declaration and Function Call

20m 55s

User Defined Functions - Functions and Parameters

19m 39s

User Defined Functions- Types of Parameters

20m 18s

Scope of a Variable

8m 3s

Assignment : Working with User Defined Functions 1

5m 24s

Assignment : Working with User Defined Functions 2

14m 45s

Declaration & Initialization of Arrays

17m 30s

Accessing Array Elements

12m 33s

Types of Arrays

7m 27s

2D Arrays

11m

Multidimensional Arrays

25m 9s

Introduction to Pointers

16m 36s

Pointers with Functions

34m 18s

Pointer Types: Null Pointer, Wide Pointer, Void Pointer

24m 3s

Pointer Arithmetic

23m 28s

Array of Pointers

9m 58s

Working with Strings

17m 10s

Introduction to Structures

9m 47s

Basic Structure Example

10m 32s

Nested Structures, Array of Structures

27m 24s

Union in C Programming

12m 27s

Typedef Function in C Programming

10m 7s

Assignment : Typedef Function

2m 57s

Overview of File Handling

15m 2s

Reading and Writing to Files

16m 45s

Assignment : File Handling in C

7m 14s

Basic File Handling

13m 2s

Bit Fields

23m 17s

File Input/Output Functions -I

6m 16s

File Input/Output Functions -II

34m 48s

Preprocessors and Header Files

8m 29s

Assignment : Preprocessors and Header Files

3m 14s

Type Casting

8m 24s

Assignment : Type Casting

2m 37s

Error Solving in C

23m 7s

Assignment : Error Solving in C

2m 41s

Recursive Functions in C

14m 53s

Assignment : Recursive Functions

3m 5s

Variable Arguments in User Defined Functioncs

20m 2s

Assignment : Variable Arguments in User Defined Functions

3m 14s

Memory Management

11m 34s

Assignment : Memory Management

2m 58s

Command Line Arguments

9m 12s

Assignment : Command Line Arguments

2m 28s

Inbuilt Library Functions- Math.h Library

21m 39s

Inbuilt Library Functions- String.h Library, Time.h Library

33m 58s

Assignment : C Programming Libraries

4m 31s

Running and Debugging programs in C

19m 18s

Assignment : Running and Debugging Programs

3m 41s

Compilation and Execution

15m 53s

Assignment : Compilation and Execution

2m 59s

Advanced C Features: Macros

9m 8s

Advanced C Features: Linked List

12m 28s

Assignment : Macros and Linked List

3m 19s

Printing a String

11m 4s

Swap 2 Numbers

24m 11s

Making a Calculator

18m 4s

Printing Patterns

35m 43s

Prime Check

19m 56s

Palindrome Check

18m 49s

Join 2 Strings

8m 21s

Reverse a string

14m 29s

Matrix Addition

14m 59s

Printing Array Elements and Addresses using Pointers

18m 57s

Structure for Student Data

12m 14s

Read and Write Data in a File

9m 4s

Course Summary

11m 7s

Interview Question

30m 24s

Career Guideline

2m 48s

FAQs

#include <stdio.h>
void main(int argc, char *argv[] ) {
printf("Program name is: %s\n", argv[0]);
if(argc < 2){
printf("No argument passed through command line.\n");
}
else{
printf("First argument is: %s\n", argv[1]);

Run an executable from the "Command Prompt" in Windows or the "DOS prompt" in older versions of Windows to test command line inputs. You can also utilise command line parameters in programme shortcuts or when using Start -> Run to start an application.

The arguments passed to the operating system's command line by the user during execution are known as command line arguments. Previously, we utilised main() routines that took no arguments. The main() method takes care of these command line inputs.

We commonly define main() with two arguments to pass command line arguments: the first argument is the number of command line arguments, and the second argument is a list of command line arguments. The argc value should not be negative. argv(ARGument Vector) is a character pointer array that contains all of the arguments.

A collection of null-terminated strings that reflect command-line parameters entered by the program's user. By convention, argv[0] is the command used to start the programme. The first command-line argument is argv[1]. argv[argc - 1] is the last argument from the command line, and argv[argc] is always NULL.