Thread: Different outputs on different OS

Hello all. this is a great site for programming and thanks for all people who help. so am writing a C program in linux using gcc and gedit. the program is not yet completed. and i am short of time. the program output varies from OS to OS. the main role of the program is to encrypt a file after the user has input a text and saved it to a file. the text that is saved to the file contains no text when run in linux. when run in windows xp i get the text followed by a square. in windows 7 i get a clean text file. i wonder if someone can point me to the right direction. heres the code. am still a beginner. thanks in advance. You can go directly to the function newFile() which is the part that writes to a file

Code:

#include <stdio.h>
#include <string.h>


#define TEXTSIZE 256

//Function Prototypes//

void optionLists();
void encryption();
void decryption();
void encryptionLists();
void newFile();

//Global Variables//

char *line = {"\n-----------------------\n"};
char *newline = "\n";
short int choice;


int main()
{
    optionLists();
    printf(" Enter Choice: ");
    scanf( "%d", &choice);

    switch (choice)
    {
        case 0:
        {
            return 0;
            break;
        }

        case 1:
        {
            encryption();
            break;
        }

        case 2:
        {
            decryption();
            break;
        }

        default:
        {
            printf(line);
            printf(" Wrong Choice!\n");
        }
    }


}

void optionLists()
{
    printf(" [1] Encryption\n");
    printf(newline);
    printf(" [2] Decryption\n");
    printf(newline);
    printf(" [0] Exit\n");
    printf(line);
}


void encryption()
{
    printf(" E N C R Y P T I O N   M E N U\n");
    encryptionLists();
    getchar();
}


void decryption()
{
    printf(" \nD E C R Y P T I O N   M E N U\n");
    getchar();

}

void encryptionLists()
{
    printf(newline);
    printf(" [1] Existing File\n");
    printf(newline);
    printf(" [2] New File\n");
    printf(line);
    printf(" Enter Choice: ");
    scanf( "%d", &choice);

    switch (choice)
    {
        case 1:
        {
            printf("Test");
            break;

        }

        case 2:
        {
            newFile();
            break;

        }

    }


    getchar();
}


void newFile()
{
    FILE *fp;
    char text[TEXTSIZE];
    int i, wordCount;
    printf(newline);
    printf(" N E W   F I L E\n");
    char filename[20];
    //char fileName[25];
    //char ext_1 = '.';
    //char ext_2 = 't';
    //char ext_3 = 'x';
    //char ext_4 = 't';
    //char ext[5] = "";

    //sprintf(ext, "%c%c%c%c",ext_1,ext_2,ext_3,ext_4);


    printf(line);
    printf(newline);
    printf(" Enter the name of the file: ");
    scanf("%s", &filename);
    //strcat(fileName, filename);
    //strcat(fileName, ext);
    fp = fopen(filename, "ab+");

    if (fp == NULL)
    {
       printf(" New file failed");
       getchar();
    }

    else
    {
        printf(" Enter your text below:\n");

        for (i = 0; i < TEXTSIZE; i++)
        {
            scanf("%c", &text[i]);
            printf("%s\n", text);

        }


        fp = fopen(filename, "ab+");

        if (fp != NULL)
        {

            fflush(stdin);
            fgets(text, TEXTSIZE, stdin);
            fputs(text,fp);
            fclose(fp);
        }

        else
        {
            printf("\nCould not create file!\n");
        }


        getchar();

    }


}