count specific number of elements

For example, if I have an array of 5 inputted elements, how would I count how many times a specific value was entered if that value has already been established in a variable.

INPUT:
4
4
4
1
2

If click is defin开发者_如何学运维ed as 4 then how would I count how many times click is used in the array? Hopefully that makes sense. Thanks

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As you've tagged your question as C++, here is a proper C++ answer, using STL.

int num = std::count(&array[0], &array[5], click);

See http://en.cppreference.com/w/cpp/algorithm/count

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This is how you would do it with C style arrays.

int i;
int count = 0;
for(i = 0; i < ARRAYSIZE; ++i)
{
    if(array[i] == click)
        ++count;
}

ARRAYSIZE is the size of your statically allocated array, array your array variable and click the value you are looking for. In count the count of the variable is saved.

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You could use count.

Something like this (sorry I'm out of practice with C++):

#include <algorithm>

void someFunction() {
    int input[5];
    // initialize input with some values
    int num = std::count(&input[0], &input[5], 4);
}

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If it isn't sorted, then linear search is your only choice.