C++ Weapon Test

#include <iostream>
#include <ctime>


void weapon(int tool, int atk, int def, int spd);
void weapon(int tool);

int main(){

    int hp = 100;
    int atk = 40;
    int def = 40;
    int spd = 40;
    int tool;

    std::cout << "Choose a Weapon: \n";
    for(int i=1; i <=5; i++){
        std::cout << i << " ";
        weapon(i);
        std::cout << '\n';
    }
    std::cin >> tool;

    weapon(tool,atk,def,spd);

    return 0;
}

void weapon(int tool){
    switch (tool) {
        case 1:
            std::cout << "Knife";
            break;
        case 2:
            std::cout << "Axe";
            break;
        case 3:
            std::cout << "Harp";
            break;
        case 4:
            std::cout << "Sword";
            break;
        case 5:
            std::cout << "Shield";
            break;
        default:
            std::cout << "Fists";
            break;
    }
}

void weapon(int tool, int atk, int def, int spd) {
    switch (tool) {
        case 1:
            std::cout << "Knife: ";
            atk += 5;
            def -= 2;
            spd += 5;
            std::cout << "\nAttack: " << atk << "\nDefense: " << def << "\nSpeed: " << spd;
            break;
        case 2:
            std::cout << "Axe: ";
            atk += 10;
            def -= 3;
            spd -= 3;
            std::cout << "\nAttack: " << atk << "\nDefense: " << def << "\nSpeed: " << spd;
            break;
        case 3:
            std::cout << "Harp: ";
            atk += 1;
            def += 3;
            spd += 2;
            std::cout << "\nAttack: " << atk << "\nDefense: " << def << "\nSpeed: " << spd;
            break;
        case 4:
            std::cout << "Sword: ";
            atk += 8;
            def -= 5;
            spd += 4;
            std::cout << "\nAttack: " << atk << "\nDefense: " << def << "\nSpeed: " << spd;
            break;
        case 5:
            std::cout << "Shield: ";
            atk -= 1;
            def += 9;
            spd -= 4;
            std::cout << "\nAttack: " << atk << "\nDefense: " << def << "\nSpeed: " << spd;
            break;
        default:
            std::cout << "Fists: ";
            atk +=1;
            spd +=8;
            std::cout << "\nAttack: " << atk << "\nDefense: " << def << "\nSpeed: " << spd;
            break;
    }
}