Thread: Lotto C Language game PLEASE HELP

When I try to run this it compiles but gives me no output. I'm trying to make a lotto game where the user enters 5 numbers between 1 and 47 and those numbers are compared to an array that is randomly filled with 6 numbers between 1 and 47. Then I need to print the numbers that the user chose, state how many matched, and list which ones matched. <-- This last part I don't know how to do. Please help me with this as well as let me know why its compiling with no output. If it helps, I'm using Codeblocks.

Code:

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


void main ()

{srand(time(NULL));

    int randomNumberGenerator;
    int getLotteryNums;
    int matchCandidate;
    int userMatchNumbers;
    bool rptFunction;
}
/*Generates random numbers to fill the official lotto array without repetition.
lotto is a buffer with unique numbers.
sizeLotto is the size of the array.
candidate is a number that will be validated against lotto.
*/
void randomNumberGenerator (int officialNumbers[], unsigned int sizeOfficialNumbers,unsigned int maxNum)
{
    if (maxNum < sizeOfficialNumbers)
    {
        printf("ERROR:max Number cannot be smaller than the size of the official array\n");
        return 1;
    }
    int currentSize = 0;
    while(currentSize!=sizeOfficialNumbers)
    {
        int candidate = rand() % maxNum +1;
        if(!matchCandidate(officialNumbers,currentSize,candidate)){
            officialNumbers [currentSize] = candidate;
            currentSize++;
        }
    }
return 0;
}
//Prompts the user to choose lottery numbers and stores them in an array.
void getLotteryNums( int userNumbers[5] )
{
int i;
printf("Enter 5 numbers betweeen 1 and 47\n");
for ( i=0; i<5; i++)
{
printf("Enter number %d: ", i+1);
scanf("%d", &userNumbers[i]);
}
}

int matchCandidate (int lotto[],unsigned int sizeLotto, int candidate)
{
int i = 0;
    for ( i=0; i<sizeLotto; i++)
    {
        if (candidate == lotto[i])
            return (1);
    }
    return 0;

}
int userMatchNumbers (int userNumbers [], int officialNumbers[], unsigned int sizeUserNumbers, unsigned int sizeOfficialNumbers,
                      unsigned int storedNumbers[])
{
    int i=0;
    unsigned int sizeStoredNumbers = 0;
    for (; i<sizeUserNumbers; i++)
       {

    printf("INFO - comparing #%d value %d : ",i,userNumbers[i]);
        if (matchCandidate (officialNumbers, sizeOfficialNumbers, userNumbers[i]))
        {
            printf(" Ok\t");
            storedNumbers [sizeStoredNumbers] = userNumbers[i];
            sizeStoredNumbers ++;
            printf("stored = %d\n",sizeStoredNumbers);
         }
         else{
            printf("Nok\n");
         }

       }
       printf("INFO - stored number = ");
       for(i=0;i<sizeStoredNumbers;i++)
            printf("%d",storedNumbers[i]);
        printf("\n");
        return sizeStoredNumbers;

}

bool rptFunction (void)
{
    char repeatAnswer = 'n';
    printf("Do you want to play again? (n or N for no)\n");
    scanf("%c", &repeatAnswer);
    return (repeatAnswer !='n' || repeatAnswer !='N');
}

Originally Posted by quzah

Code:

void main ()
 
{srand(time(NULL));
 
    int randomNumberGenerator;
    int getLotteryNums;
    int matchCandidate;
    int userMatchNumbers;
    bool rptFunction;
}

It gives you no output because you don't actually call any functions in main.


Quzah.

I'm confused as to how to fix this. Ive been working on this for hours and my brain is fried. How do I call the functions to main?