how to take input from command line in c code example

Example 1: command line arguments in c

int main( int argc, char *argv[] )
./a.out kiran kumar gun
./a.out is arg[0]
kirna is arg[1]

Example 2: int main(int argc char *argv ) in C

int  // Specifies that type of variable the function returns.
     // main() must return an integer
main ( int argc, char **argv ) {
     // code
     return 0; // Indicates that everything went well.
}

Example 3: command line arguments c

int main(int argc, char* argv[]){/*...*/}