confused about arrays

**sal817** · 09-18-2004

here is what i came up with, i can select menu, go to that option,back to menu, do something different, but can't get it to print out my array after all input has been stored. Any suggestions?

#include <stdio.h>
#define MAX 10
int num_books(int[],int );

void print_num_books(int [],int);
int main(void)
{

int stock_amt[MAX];

int n;
while(n!=11)
{

printf("\nPlease choose an option below by typing a number between 1 and 11.\n\n");

printf("1\tAutomobiles\n\n");
printf("2\tCookbooks\n\n");
printf("3\tGardening\n\n");
printf("4\tHistory\n\n");
printf("5\tMystery\n\n");
printf("6\tPlanets\n\n");
printf("7\tScience fiction\n\n");
printf("8\tSelf Help\n\n");
printf("9\tSports\n\n");
printf("10\tTravel\n\n");
printf("11\tExit program\n\n");

n=num_books(stock_amt,MAX);
print_num_books(stock_amt,n);
}

}
int num_books(int stock_amt[],int lim)
{
int index=0,n;

scanf("%d", &n);

if(n==1)
{
printf("How many automobiles will Perfect book carry?");
scanf("%d",&stock_amt[index]);
}
else if(n==2)
{
printf("How many cookbooks will Perfect book carry?");
scanf("%d",&stock_amt[index]);
}
if(n==3)
{
printf("How many gardening will Perfect book carry?");
scanf("%d",&stock_amt[index]);
}
else if(n==4)
{
printf("How many History will Perfect book carry?");
scanf("%d",&stock_amt[index]);
}
if(n==5)
{
printf("How many Mystery will Perfect book carry?");
scanf("%d",&stock_amt[index]);
}
else if(n==6)
{
printf("How many Planets will Perfect book carry?");
scanf("%d",&stock_amt[index]);
}
if(n==7)
{
printf("How many Science fiction will Perfect book carry?");
scanf("%d",&stock_amt[index]);
}
else if(n==8)
{
printf("How many Self Help will Perfect book carry?");
scanf("%d",&stock_amt[index]);
}

if(n==9)
{
printf("How many Sports will Perfect book carry?");
scanf("%d",&stock_amt[index]);
}
else if(n==10)
{
printf("How many Travel will Perfect book carry?");
scanf("%d",&stock_amt[index]);
}
else return(index);
}
void print_num_books(int stock_amt[],int n)
{
int index;
printf("\n***STOCK INVENTORY**\n\n");
for(index=0;index<n;index++){

printf("Amount is %d\n",stock_amt[index]);
}
}

**Prelude** · 09-18-2004

Use this as a base to work from:

Code:

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

int main ( void )
{
  int a[10];
  int index = 0;
  int i;

  while ( index < 10 ) {
    printf ( "1) Add a number\n2) Display numbers\n" );
    printf ( "Selection: " );
    fflush ( stdout );

    switch ( getchar() ) {
    case '1':
      printf ( "Enter a number: " );
      fflush ( stdout );

      if ( scanf ( "%d", &a[index++] ) != 1 ) {
        fprintf ( stderr, "Invalid input\n" );
        return EXIT_FAILURE;
      }

      break;
    case '2':
      for ( i = 0; i < index; i++ )
        printf ( "%d ", a[i] );
      printf ( "\n" );

      break;
    default:
      fprintf ( stderr, "Invalid selection\n" );
      return EXIT_FAILURE;
    }

    getchar(); /* Eat the newline */
  }

  return EXIT_SUCCESS;
}

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