Please, can some one tell me what's wrong with this code?

Question

Please, can some one tell me what's wrong with this code?

#include <iostream>
using namespace std;
int main() {
    int a[3], i;
    for(i = 0; i <= 3; i++ )
        {
            a[i] = 0;
            cout << "i = " << i << endl;
        }
    return 0;
}

Answer 1

The array length for this code is only 3 but the for loop executes 4 times since the loop executes from 0 to 3. The value of i will look like this:

i = 0
i = 1
i = 2
i = 3

Since the array a[3] length is 3, but you tried putting 4 elements in it ofcourse it will show an error:

*** stack smashing detected ***: terminated
Aborted (core dumped)

Fixes

Try to change the array length or the loop condition.