How do I read file into a command line?

Question

Basically what I want to do is have a program with int main(argc, *argv[]) and instead of writing chars into command line, I want to have my program read those words from a file. How could I accomplish this? Is there a special command in Linux for that?

Answer 1

You can use standard redirect operations in a *nix shell to pass files as input:

./myprogram < inputfile.txt

This statement executes your program (myprogram) and pumps the data inside of inputfile.txt to your program

You can also redirect the output of program to a file in a similar fashion:

./myprogram > outputfile.txt