Reading command-line input in C

Following a program which echos whatever you type in the command line.

#include 

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

argc is the count of the number of command-line arguments. argv is array of words. Each word is a string. So if you type:

myprogram.exe my input

argv[] would fill as follows:

argv[0] = myprogram.exe
argv[1] = my
argv[2] = input

The terms argc and argv are used by convention.