Minmax numbers array - c

Question

This program gets 5 numbers only from the user then
Store them in an array. Get the min, max, and the average of the numbers inputted. Here's the code I made:
#include <stdio.h>
#include <conio.h>
int main()
{
int num[5];
int min, max=0;
int counter;
float average, total;
max = num[0];
min = num[2];
for(counter=0; counter<=4; counter++)
{
printf("Enter a number: ");
scanf("%d", &num[counter]);
if(num[counter]>max)
{
max = num[counter];
}
if (num[counter]<min)
{
min = num[counter];
}
}
total = max+min;
average = total/2;
printf("The maximum number is: %d\n", max);
printf("The minimum number is: %d\n", min);
printf("The average is: %d", average);
getch();
return 0;
}
FInally fixed my error with the min and max and now I'm having trouble with the average. I should only get the average of the min and max numbers but it keeps on showing an average of zero. Can someone help? Thankkyouuu.

Answer 1

//get memory address and store value in it.
void getValue(int *ptr)
{
printf("Enter a number: ");
scanf("%d", ptr);
}
int main()
{
//initialized n=5 as per your requirement. You can even get the value at run time.
int min, max, counter,n=5;
int num[n];
float average,total;
getValue(num); //get num[0]
min=max=total=num[0]; //Initialize min,max,total with num[0]
for(counter=1; counter<n; counter++)
{
getValue(num+counter); //get num[counter]
num[counter]>max?max = num[counter]:max; //find max
num[counter]<min?min = num[counter]:min; //find min
total+=num[counter]; // total = total + num[counter]
}
average = total/n;
printf("The maximum number is: %d\n", max);
printf("The minimum number is: %d\n", min);
printf("The total is: %f\n", total);
printf("The average is: %f\n", average);
return 0;
}

Answer 2

Your calculation of average is wrong; you need to use total/num (remember use float):
total += num[counter];
max and min were incorrectly initialized: num[0], num[2] may be anything when you initialize them.

Answer 3

Aside from your calculation of average being wrong (it's not just total/2), you need to use the correct format specifier in the printf:
printf("The average is: %g", average);
You are using %d which tells printf to expect an integer, but you're giving it a float.

Answer 4

1 Min and max should be initialized
int min = INT_MAX;
int max = INT_MIN;
2 You need to keep a running total of your numbers
int total = 0;
...
// inside loop
scanf("%d", &num[counter]);
total += num[counter];
3 At the end print the average, recommend going to floating point.
printf("The average is: %.1f", (double)total/counter);