Command line argument is an important concept in C programming. It is mostly used when you need to control your program from outside. Command line arguments are passed to the main() method.

Syntax : 

int main(int argc, char *argv[])

Example :

#include<stdio.h>
#include<conio.h>
int main(int argc,char *argv[])
{
    printf("program name is %s\n",argv[0]);
    printf("first argument  %s\n",argv[1]);
    printf("second argument %s\n",argv[2]);
    printf("Third argument %s\n",argv[3]);
    return 0;
}

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