Thread: Count_nums (need help ASAP!)

Count_nums in an array
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Hi..i need to get a solution to this pretty trivial problem asap.

This is a random number generator that has header functions that are meant to do most of the work.

The part im having trouble with is the count_nums section where the program is meant to output the number of occurrences of numbers 1->9 in the array a[i] which contains random numbers

Ive been able to do it with switch statements...but it needs to be done just using the variables *a (the array), range (defined range), and num (the number 1->9 which will be incased in a loop) as well as maybe int count or int i too.

I also need to be able to accept in a character r or R from the keyboard to restart the whole thing , and q to exit!!!!

PLLLLLLLLLLLEEEEEEEEEEEEASSSSSEEE help me if you can!

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Code:

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



/*int*a will be our array, and int s the size of the array*/

	void SetRandomSeed(void);
	int my_random(int range);
	int get_max(int*a,int s); /* array, array size */
	int get_min(int*a,int s); /*array , array size */
	void count_nums(int*a,int range,int num);

int count_num(int a[], int range, int num)
/* checks array a for number of occurrances of value */
{
   int i, count=0;
   for (i=0; i<range; i++)
   {
	 if (a[i] == num)
	 {
		++count; /* it was found */
	 }
   }
   return(count);
}

void print_array(int a[], int range)
{
   int i;
   for(i=0; i<range; i++)
   {
	 printf("%d ", a[i]);
   }
   printf("\n");
}

 
int get_max(int*a,int s)
				/* returns largest number */
{
   	int i, num_large;   /* cnum_large is largest value so far      */
  
   /*  Initial array element is largest so far                   */ 
   	num_large = a[0];       

   /*  Compare remaining list to the largest so far; save larger */
   	for (i=1; i<s; ++i)
      		if (a[i] > num_large)
         		num_large = a[i];
   return (num_large);
}


int get_min(int*a,int s)
		/* returns smallest number */
{
   			int i, num_small;   /* num_small is smallest value so far      */
  
   /*  Initial array element is smallest so far                   */ 
  			 num_small = a[0];       

   /*  Compare remaining list to the smallest so far; save smallest */
   			for (i=1; i>s; ++i)
      			if (a[i] < num_small)
         		num_small = a[i];
   return (num_small);
}



void SetRandomSeed(void)
{
   /* call time and feed it to srand */
   	srand( (int) time(0) ) ;
}




int my_random(int range)
{
 return 1+rand()%range;
}


int main () 
{
   int a[10],one; /*array*/
      int i,range,s,c; /*global variables*/
        int max,min,randc; /*secondary variables*/
         int num_occ, value;

  
  /*Welcome line*/
  printf("\nWelcome to the Random Number Generator.\n");
   /* range */
   	printf("\nPlease enter the value for the range:\n");
   	   scanf("%d",&range);
   		printf("\n----------------------------------\n");
   			printf("This program will generate random numbers in the range %d ",range);

			
   /*input number of random numbers you would like generated*/
		printf("\nHow many random numbers would you like generated?\n");
		   scanf("%d",&s); /*length of s*/
		 
    for (i=0;i<s;++i){
      a[i] = my_random(range);//int n
           printf("\nrandom number %d: %d\n",i,a[i]);//int n ends
}
        printf("\nPress any key to continue...\n");
		getch();
	
		

   SetRandomSeed();
   /* set the random seed from the time */
	printf("\nRAND_MAX equals %d \n",RAND_MAX);
	    printf("range equals %d",range);
	       printf("\n----------------------------------\n");

   /* print the occurrances*/

    for(value=0; value<=9; value++)
   {
	  num_occ = count_num(a,range, value);
	  printf("The value %d was found %d times.\n", value, num_occ);
   }

   	
    /*max and min of range*/
   printf("\nPress enter for the max and min values for the range\n");
      getch();
        printf("\n min %d\n",get_min (a,s));
            printf("\n max %d\n",get_max (a,s));
  getch();

 
   /* if everything okay return no errors */
   	return (0);



}

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Thanks a lot!
Legacye

This is the section that does the count work:

Code:

int count_num(int a[], int range, int num)
/* checks array a for number of occurrances of value */
{
   int i, count=0;
   for (i=0; i<range; i++)
   {
 if (a[i] == num)
 {
++count; /* it was found */
 }
   }
   return(count);
}

How can i apply quzah's method to this part of the program..so that i get the occurrances to output in the main() part of the program that loops as shown above?

i Tried that Salem, but all it does is extend the output past 9 (up to the maximum value in the array)..it doesnt help the functionality of occurrances at all...

I tried the total [nums] etc...with and without Salems suggested way and it keeps crashing ...and doesnt count the numbers correctly

Code:

int count_num(int a[], int range, int num)
/* checks array a for number of occurrances of value */
{
 
int total[10]={0};
int answer;

{
   total[a[num]]++;
   answer=total[a[num]];
}
   return(answer);
}