Program:

#include <stdio.h>

int main(int argc, char *argv[])
{
	int counter;
	for(counter=0; counter<argc; counter++)
		printf("argv[%2d]: %s\n",counter,argv[counter]);
	
	return 0;
}

Output

sh-4.2$ ./main Hello world "how are you?" 
argv[ 0]: ./main
argv[ 1]: Hello 
argv[ 2]: world
argv[ 3]: how are you?

Consider the output

./main, Hello, and world are the single word argument while "how are you?" is multiple words arguments, to pass multiple words in command line, we can enclose them in double quotes.