数组函数中的最小值和最大值显示除最大值和最小值以外的任何值

Question

Here's my code

#include <iostream>
#include <cstdlib>
#include <ctime>


using namespace std;

void buildArray(int arr[], int size) {

        srand(time(NULL));
        for (int i = 0; i < size; ++i) {
            arr[i] = rand() % 100 + 1;
        }

}

void showArray(int arr[], int size) {
    for (int i = 0; i < size; ++i) {
        cout << i << arr[i] << " ";
    }

}

void curveArray(int arr[], int size, int curve) {
    for (int i = 0; i < size; ++i) {
        arr[i] += curve;
    }

}

int maxNum(int arr[], int size) {

int maxnum = arr[0];
int position = 0;

for (int i =1; i < size; ++i) {
    if (arr[i] > maxnum ) {
        maxnum = arr[i];
        position = i;
    }
}
  return position;
}

int minNum(int arr[], int size) {

int minnum = arr[0];
int position = 0;

for (int i =1; i < size; ++i) {
    if (arr[i] < minnum) {
        minnum = arr[i];
        position = i;
    }
}
    return position;
}



int main()
{
    const int size = 10;
    int arrayx[size];
    buildArray(arrayx, size);
    showArray(arrayx, size);
    //curveArray(arrayx, size, 5);
    //showArray(arrayx, size);

    int maxVal = maxNum(arrayx, size);
    cout << endl << endl << maxVal;
    int minVal = minNum(arrayx, size);
    cout << endl << endl << minVal;


    return 0;
}

Whenever I try to run this code it generates a random array (as it's supposed exactly) but then when I use the functions to get the Max and Min Values it generates random number so here's the output when I run it

http://imageshack.com/a/img27/725/4jv9.png

This is from a C++ practice video but It works with the tutor but not with me and it's almost the same code!!

Answer 1

Your code returns positions of min and max values. To take values use

int maxVal = arrayx[maxNum(arrayx, size)];
cout << endl << endl << maxVal;
int minVal = arrayx[minNum(arrayx, size)];
cout << endl << endl << minVal;

also your showArray is incorrect. Change it to

void showArray(int arr[], int size) {
    for (int i = 0; i < size; ++i) {
        cout << arr[i] << " ";
    }
}

Answer 2

You are returning position of Max and Min value from the function, not the actual max and min values. It should be

return arr[position];

instead of

return position;