C Program to Print the Program Name and All its Arguments
Last Updated :
19 Jul, 2022
The command-line argument (CLA) is the parameter provided in the system upon request. Command-line conflict is an important concept in system C. It is widely used when one needs to control your system from the outside. Command-line arguments are transferred to the main () path. Argc calculates the number of arguments in the command line and argv [] is an array that contains values passed as arguments at the time of the run. The parameters passed through the command-line can be scanned in the program through command-line arguments.
Syntax:
int main(int argc, char *argv[])
Here,
- argc is the integer type of argument that contains a total number of arguments passed through the command line.
- argv[] is an array of character pointers, which contains all the parameters.
Example:
Input: C:\QC_Work\Projects\Geeks\GPL\C>args.exe
Output: args.exe
Input: C:\QC_Work\Projects\Geeks\GPL\C>args.exe 2
Output: args.exe 2
Input: C:\QC_Work\Projects\Geeks\GPL\C>args.exe akash bro
Output: args.exe akash bro
Input: C:\QC_Work\Projects\Geeks\GPL\C>args.exe geeks
Output: args.exe geeks
Below is the C++ program that accepts all the arguments from the user and prints every argument, including the file name. The program is compiled and executed successfully on Windows and Linux systems.
C++
#include <stdio.h>
void main( int argc, char *argv[])
{
int i;
for (i = 0; i < argc; i++)
{
printf ( "%s " , argv[i]);
}
printf ( "\n" );
}
|
Output:
Time complexity: O(n) since using a for loop
Auxiliary Space: O(1)
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