I have an assignment and it ask me for Re-implement my solution for a Problem (w

ID: 3532698 • Letter: I

Question

I have an assignment and it ask me for

Re-implement my solution for a Problem (with functions

and arrays) using command-line arguments as follows:

FileCrypt -encrypt "hello.txt" "hello.out"

FileCrypt -decrypt "hello.out" "hello.ans"

I have my problem solved but I don't know how to start with the command line ( I don't get this part )

the FileCrypt -encrypt "hello.txt" "hello.out"

FileCrypt -decrypt "hello.out" "hello.ans"

someone please expline it and show an example for me and help me will get 5/5

Command line arguments can be accessed within the main function :

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

In the above statement :

argc is the argument count (no. of command line arguments )

argv[] is a char * array ( a string array ) of all command line arguments

(Remember the program name 'FileCrypt' in this case, is counted as a command line argument as well )

FileCrypt -encrypt "hello.out" "hello.ans"

The above values will automatically be set in your program (i.e, you can directly access those variables from inside your main function)

gcc <program.c> -o FileCrypt

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