The Return of Strukturno: Datoteki part 1

#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
void main() {
    char str[100];
    FILE *fPointer;
    char fname[20]="text.txt";

    fPointer = fopen(fname,"w");
    if(fPointer==NULL)
    {
        printf(" Error in opening file!");
        exit(1);
    }
    printf("Input a sentence for the file: ");
    fgets(str,sizeof str,stdin); // fgets e kako scanf, mu kazuvame vo koja promenliva da zapisuva, golemina i deka e vlez
    fprintf(fPointer,"%s",str);
    fclose(fPointer);
    printf("\n The file %s has been created successfully....!!\n\n",fname);

}