[Cpp-Programming] file copy program with arguments taken in main function

This what my code is :
===========================
# include <stdio.h>
# include <stdlib.h>

int main ( int argc, char *argv[] )
{
FILE *psCopy, *psPaste ;
char ch ;

/* if ( argc != 3 )
{
printf("Insufficient number of arguments\n");
exit (101);
} */

psCopy = fopen ( argv [1], "r" );
if ( !psCopy )
{
printf ("File couldn't open. Sorry!\n");
exit (102);
}

psPaste = fopen ( argv [2], "w" );
if ( !psPaste )
{
printf ("File couldn't open. \n");
exit (201);
}

while ( (fscanf (psCopy,"%c",&ch)) == 1 )
fprintf (psPaste,"%c",ch) ;

fclose (psCopy) ;
fclose (psPaste) ;

return ;
}
=========================
I use GNU gcc Compiler in Linux system.

Now The code basically should take 2 files as input and copy from one
file to another. So, I opened terminal at entered < filecopy file1.txt
file2.txt > but its showing some errors.
How should I do run this in terminal so as to successfully run this
code.
< source code file, file1.txt and file2.txt are stored in the default
location where generally C stores a.out >

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