File Write

#include <stdio.h>
#include <stdlib.h>

void fileWrite(char *fileName);

int main()
{
    char fileName[] = "output.txt";

    fileWrite(fileName);

    return 0;

}

void fileWrite(char *fileName)
{
    FILE *fp;
    int ch;

    fp = fopen(fileName, "w");

    if(fp == NULL)
    {
        printf("Error opening file.\n");
        exit(1);
    }

    while(1)
    {
        ch = getchar();
        if(ch == EOF) break;
        else fputc(ch, fp);
    }

    fclose(fp);
}