Question

Here is code of my program that is not working. This program should calculate the result of the first number raised to second number. Where’s the problem?

#include <iostream>

int main()
{
    std::cout << "iveskite betkoki skaiciu" << std::endl;
    // "enter number:"
    int v1;
    std::cin >> v1;
    std::cout << "iveskite skaiciu kiek kartu jus norit pakelti pirmaji skaiciu" << std::endl;
    // "Enter the number of times you want to raise the first number"
    int v2;
    std::cin >> v2;
    int rez;
    // result
    for (int cnt = 0; cnt != v2; ++cnt)
        rez *= v1;  //  rez = rez * v1;
    std::cout << v1
              << " pakeltas "
              << v2 << " kartu ,yra: /t"
              << rez << std::endl;
    return 0;
}

Answer 1

You’re not initializing rez, and thus the behavior is undefined.

You should have int rez = 1; and treat the case where v1 == 0.