Thread: C Newbie Hitting Trouble

Hey, I am trying to make a program about a food bank that can record donations, record requests, fulfill requests[permitted the donations have enough to], and show current donations/unfulfilled requests. I can't seem to have the requests be added without crashing. Any help is appreciated =D!

Code:

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

int main()
{
    int i, j, index, ch, found, don_quant, don_amt[100], don_count, req_amt[100], req_count, req_quant;
    char word [20], don_inv_type[100][20], req_inv_type[100][20];
    don_count = 0;
    req_count = 0;
    printf(" 1. Add a Donation \n 2. Add a request \n 3. Fulfull a request \n 4. Print status \n 5. Exit \n");
    scanf("%d", &ch);
    while(ch !=5){ 
      if(ch == 1){
            printf("Enter inventory type: ");
            scanf("%s", &word);
            printf("Enter amount: ");
            scanf("%d", don_quant);
            found = -99;
            for(i=0; i<don_count; i++){
                     if(strcmp(don_inv_type[i], word) == 0)
                     found = i;
                     }
            if(found == -99){
                     strcpy(don_inv_type[i], word);
                     don_amt[i] = don_quant;
                     don_count++;
                     }
            else
                     don_amt[found] += don_quant;
                     }
      else if(ch == 2){
                       printf("Enter inventory type: ");
                        scanf("%s", &word);
                        printf("Enter amount: ");
                        scanf("%d", req_quant);
                        strcpy(req_inv_type[req_count], word);
                        req_amt[req_count] = req_quant;
                        req_count++;
                    }
      else if(ch == 4){
                        printf("Printing Donation table: \n \n");
                        for(i=0; i<don_count; i++)
                            printf("%s %d \n", don_inv_type[i], don_amt[i]);
                        printf("Printing Request table: \n \n");
                        for(i=0; i<req_count; i++)
                            printf("%s %d \n", req_inv_type[i], req_amt[i]);
                     }
      printf(" 1. Add a Donation \n 2. Add a request \n 3. Fulfull a request \n 4. Print status \n 5. Exit \n");
      scanf("%d", &ch);   
            }
    system("PAUSE");
    return 0;
}

Edit: Also, the donation amount[don_amt] for each type becomes a huge number =/. The 3rd option is deliberately missing; skipped it.
Edit: Initial problem resolved; will keep open in case I hit a new issue with the program, thanks!