Write data in files from array of structures using pointers - c

Question

I am trying to rewrite text in files, changing first line by +1(that holds number of struct saved in igraci.txt) This part is working fine. Then rewrite all text that was there before(This is also working fine) and in the end add 2 new lines in text. Problem is in the last code i wrote here
These are some global variables that I am having problem with and strcture
int RijeciBroj = 0;
int IgraciBroj = 0;
typedef struct Igrac
{
char ime[20];
int brojPoena;
};
This is method for allocating memmory for structures having in mind that one strcture is going to be added
struct Igrac* napraviProstor(int n) {
IgraciBroj = n; //here I try to give global new value
printf("U NAPRAVI PROSTOR : %d", IgraciBroj); // Here i get -9282928
return (struct Igrac*) malloc((n + 1) * sizeof(struct Igrac));
}
This is method that is reading text from file and storing it in allocated memory
void ucitajIgrace(struct Igrac *arr) {
static const char filename[] = "igraci.txt";
FILE *file;
file = fopen(filename, "r");
if (file != NULL)
{
char line[20];
int n;
fscanf(file, "%d", &n);
int i = -1;
int k = 0;
fgets(line, 20, file);
while (fgets(line, 20, file) != NULL) /* read a line */
{
line[strcspn(line, "\n")] = '\0';
i++;
if (i == 0) {
strcpy((arr + k)->ime, line);
}
if (i == 1) {
(arr + k)->brojPoena = atol(line);
k++;
i = -1;
}
}
printf("Igraca: %d", IgraciBroj); //here i get -9892827280
fclose(file);
}
else
{
perror(filename);
}
}
Main method
int main()
{
int o;
Igrac *igr;
FILE *file1;
file1 = fopen("igraci.txt", "r");
if (file1 != NULL)
{
char line[20];
fscanf(file1, "%d", &o); //first line is number of structs
igr = napraviProstor(o);
ucitajIgrace(igr);
}
pocniIgru(rijeci,igr); //ignore rijeci that is another array that is working perfect and has nothing to do with my problem
return 0;
}
This is method where I have problem
void pocniIgru(char** rijeci, struct Igrac *igraci) {
int dobijeni[5] = {}; //array that is saving random numbers so they don't repeat
int brojac1 = 0; //used for index of dobijeni[5]
char srpska[30]; // for user input
char ime[20]; //for users name that we are going to store in igraci.txt
int poeni = 0; //number of points
bool moze; //boolean for loop control
printf("Pocinje igra\n");
printf("\n\n\n\n");
int pitanje; // for random number that we are going to get
for (int i = 0; i < 5; i++) {
moze = true;
LOOP:do {
srand(time(NULL));
pitanje = rand() % RijeciBroj-1; //random number between 0 - global variable here global variable is working fine!
if (pitanje % 2 != 0) {
pitanje++; // I need even number and 0 is accepted
}
for (int k = 0; k < 5; k++) {
if (dobijeni[k] == pitanje) { //checking if we arleay had that number
goto LOOP; // goto LOOP if we had that number so we pick another
}
}
dobijeni[brojac1] = pitanje; //storing that number in loop for later check so it won't repeat
moze = false; // do-while stops
brojac1++;
} while (moze);
printf("Engleska rijec je: %s", rijeci[pitanje]); //get word from array
printf("Unesite rijec na srpskom jeziku: ");
scanf("%30s", srpska); //user input for comparing
strtok(rijeci[pitanje + 1], "\n"); //we need to remove newline
if (strcmp(rijeci[pitanje+1], srpska) == 0) { //cheking if next word is same with user input
poeni += 2;
printf("Tacno! Vas broj peona je %d\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n", poeni);
}
else {
poeni -= 1;
if (brojac != 5) {
printf("Greska! Vas broj peona je %d\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n", poeni);
}
}
}
printf("Ukupan broj poena je: %d\n", poeni);
printf("Unesite svoje ime: "); //Enter your name
scanf("%s", ime); //get name
if (strcmp(ime, "")) { //check if it's empty
IgraciBroj += 1; //global variable +1 for rewriting in file
strcpy((igraci + IgraciBroj)->ime, ime); //save name in char* struct in last place that is empty
(igraci + IgraciBroj)->brojPoena = poeni; //save points in char* struct in last place that is empty
printf("%s osvojili ste %d poena", (igraci + IgraciBroj)->ime, (igraci + IgraciBroj)->brojPoena); //Here i get normal result and name
FILE *file1;
file1 = fopen("igraci.txt", "w");
if (file1 != NULL)
{
fprintf(file1, "%d\n", IgraciBroj);
for (int broj = 0; broj < IgraciBroj; broj++) {
fprintf(file1, "%s\n", (igraci + broj)->ime); //Problem !! I get some lines before name in file example(----------Name)
fprintf(file1, "%d\n", (igraci + broj)->brojPoena); //Problem !! I get some number like -9899887
}
}
}