#include <iostream>
 
void potroj(int tab[], unsigned roz){
    while(roz--)
        tab[roz]=tab[roz]*3;
}
 
int main(){
    int tab[]={1,3,-2,7,9,-10};
    std::cout << "Przed potrojeniem:\n";
    for(unsigned i=0;i<sizeof(tab)/sizeof(*tab);i++)
        std::cout << tab[i] << " ";
    std::cout << "\n";
 
    potroj(tab,sizeof(tab)/sizeof(*tab));
 
    std::cout << "\nPo potrojeniu:\n";
    for(unsigned i=0;i<sizeof(tab)/sizeof(*tab);i++)
        std::cout << tab[i] << " ";
    std::cout << "\n";
    return 0;
}

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