Incompleto Esercizio Temperature

#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#define MAX_CIT 32
#define MAX_LEN 32

int get_data(FILE *, char (*)[MAX_LEN], int (*)[2]);
int give_data(int, char (*)[MAX_LEN], int (*)[2], char *, int);
/* WARNING : this program is designed to be case INsensitive */
main(){
    int temp[MAX_CIT][2], n_cities, asked_temp;
    char cities[MAX_CIT][MAX_LEN], selection[MAX_LEN];
    FILE * fp;
    ((fp=fopen("file.txt", "r"))!=NULL)?:(exit(1));
    n_cities=get_data(fp, cities, temp);
    puts("Hi user, gimme a city, I'll give you min temp!");
    scanf("%s", selection);
    if((asked_temp=give_data(n_cities, cities, temp, selection, 0))!=-98)
        printf("%d", asked_temp); /* the function give_data will return an int, and the 4th value passed is 0 or 1, representing min and max */
    else{
        puts("Error getting data!");
        exit(1);
    }
    fclose(fp);
    return 0;
}

int get_data(FILE * fpPtr, char (*citiesPtr)[MAX_LEN], int (*tempPtr)[2]){
    int ci=0, i;
    while(feof(fpPtr)==0){
        fscanf(fpPtr, "%s %d %d", citiesPtr[ci], &tempPtr[ci][0], &tempPtr[ci][1]);
        for( i=0; i<strlen(citiesPtr[ci]); i++ )
            citiesPtr[ci][i]=tolower(citiesPtr[ci][i]);
        ci++;
    }
    return ci; /* return number of cities */
}

int give_data(int n_cities, char (*citiesPtr)[MAX_LEN], int (*tempPtr)[2], char *selectionPtr, int whattemp){
    int get_city_index(char *, char (*)[MAX_LEN], int);
    int city_index, i;
    for( i=0; i<strlen(selectionPtr); i++ )
        selectionPtr[i]=tolower(selectionPtr[i]);
    if((city_index=get_city_index(selectionPtr, citiesPtr, n_cities))!=-99)
        return tempPtr[city_index][whattemp];
    else
        return -98;
}

int get_city_index(char *selectionPtr, char (*citiesPtr)[MAX_LEN], int n_cities){
    int i;
    for(i=0;i<n_cities;i++){
        if((strcmp(selectionPtr, citiesPtr[i]))==0)
            break;
    }
    (i<n_cities)?:(i=-99);
    return i;
}