#include <stdio.h>

void error(char *errMsg);

int main(int argc, char *argv[]) {
    if(argc != 2) {
        char errMsg[1024];
        snprintf(errMsg, 1024, "Usage: %s <filename>\n", argv[0]);
        error(errMsg);
    }


    FILE *fl = fopen(argv[1], "r");

    if(fl == NULL) {
        char errMsg[1024];
        snprintf(errMsg, 1024, "Could not open file \"%s\"\n", argv[1]);
        error(errMsg);
    }

    fseek (fl, 0, SEEK_END);
    long size = ftell(fl);
    fclose(fl);

    printf("%s:\n", argv[1]);
    printf("    %.2f Megabytes\n", (double)size/1048576);
    printf("    %.2f Kilobytes\n", (double)size/1024);
    printf("    %d Bytes\n", size);

    return 0;
}

void error(char *errMsg) {
    printf("%s", errMsg);
    exit(0);
}

// Including Functions
#include <cstdlib>
#include <iostream>
#include <sys\types.h> 
#include <sys\stat.h> 
//

using namespace std; // console window

int FileSize( const char * szFileName ) // from The CodeProject
{ 
  struct stat fileStat;  // declare a structure and the name of it
  int err = stat( szFileName, &fileStat ); //i know what it does, just cant put it in words, sorry
  if (0 != err) return 0;  // if file not found, print "0"
  return fileStat.st_size;  // when file found return size
} 

int main() // what the program first executes
{
    char buffer[100]; //makes a char to store data
    cout << "Get the size of a file! \n"; //prints what it says
    cout << "Please enter the exact path to the file: "; // prints what it says (ask's user to enter file path fo file)
    cin.getline(buffer,100); // gets what the user just typed in after they pressed enter
    cout << "Size: " << FileSize(buffer) << " bytes \n"; // uses the FileSize function up above to get the file size of the user input
    system("pause"); // the "Press any key to continue..." caption appears and does just that
}