C Programming - Command Line Arguments - Discussion

Ans: argc (ARGument Count) is int and stores number of command-line arguments passed by the user including the name of the program. So if we pass a value to a program, value of argc would be 2 (one for argument and one for program name).

The value of argc should be non negative.

Argv (ARGument Vector) is array of character pointers listing all the arguments.

If argc is greater than zero, the array elements from argv[0] to argv[argc-1] will contain pointers to strings.

Argv[0] is the name of the program, After that till argv[argc-1] every element is command -line arguments.

Command line argument is the information followed by program's name on the command line of operating system.

Two special built in functions are present which specify the number of arguments on command line and pointer to an array of character pointers, those are argc and argv respectively.

Hence 1st argument is always program name.

If the program name is hello then:

int main(int argc,char *argv){
----------------
----------------
----------------
statements;
return o;
}

The output id:
cd>exc hello.c jailani sukanya tej
the value of argc is :3
and argv[0] is hello
argv[1] is jailani
and so on.

Ans: FALSE, read the question again carefully (must always be count of total arguments) it says we should give the count ie the total number of argument we are going to use. Argc stores only the number of argument given during the run time.

@Swetha yeah correctly said me too was mistaken by the language used.

The question asked is "First argument to be supplied at command-line". They are asking If we need supply any such argument. So it's clearly false.

The argc parameter is the count of total command line arguments passed to the executable on execution (including the name of the executable as the first argument).

So the answer is true.

Hey guys the answer is false.

Because the question asked is first argument in command line not to main().

Hope you understand. :).

Answer is TRUE. Program name itself is an argument and always be the count of total arguments.I have tried it..

Answer is TRUE. The first argument to be supplied at command-line must always be count of total arguments.

Answer is TRUE. Program name itself is an argument and always be the count of total arguments.