Run C Program using Filename as argument

execute.c

/**
compile:  gcc execute.c
run    : ./a.out "filename"
**/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
 
int main(int argc, char *argv[])
{
   char ch, file_name[25];
   FILE *fp;

   fp = fopen(argv[1],"r"); // read mode
 
   if( fp == NULL )
   {
      perror("Error while opening the file.\n");
      exit(EXIT_FAILURE);
   }
 
   printf("%s", file_name);
 
   while( ( ch = fgetc(fp) ) != EOF )
      printf("%c",ch);
 
   fclose(fp);
   return 0;
}