#include <stdio.h>
#include <stdlib.h>

/* run this program using the console pauser or add your own getch, system("pause") or input loop */

int topla(int bst, int ist);
int carp(int bst, int ist);
int bol(int bst, int ist);
int cikar(int bst, int ist);

int main() {
//sayılari al
int a,bst,ist,sonuc;
printf("1- toplama \n 2- cikarma \n 3- carpma \n 4- bolme");
scanf("%d", &a);
printf("2 tane sayi gir");
scanf("%d%d",&bst,&ist );

switch(a)
{
    case 1:

         sonuc=topla(bst,ist);
        printf("sonuc: %d", sonuc);


        break;
        case 2:
            sonuc=cikar(bst,ist);
            printf("sonuc: %d", sonuc);

                break;

                case 3:
                                sonuc=carp(bst,ist);
                        printf("sonuc: %d", sonuc);

                        break;
                        case 4:
                            sonuc=bol(bst,ist);
                            printf("sonuc: %d", sonuc);

                            break;
    default: printf("boyle bir deger yok!");
    break;
}

}

int topla(int bst, int ist)
{


    return(bst+ist);
}


int cikar(int bsc,int isc)
{
    int sonuc;
    sonuc=bsc-isc;
    return(sonuc);

}

int carp(int bst, int ist)
{


    return(bst*ist);
}

int bol(int bst, int ist)
{
    return(bst/ist);

}