C İle Çarpma, Toplama ve Bölme İşlemi

#include <stdio.h>
int main()
{

int sayi1,sayi2,toplam,fark,carpim;
toplam=sayi1+sayi2;
fark=sayi1-sayi2;
carpim=sayi1*sayi2;
float bolum=(float)sayi1/(float)sayi2;
printf("Birinci sayiyi giriniz:"); scanf("%d", &sayi1);
printf("Ikinci sayiyi giriniz:"); scanf("%d" , &sayi2);
printf("Girdiginiz sayilarin toplami:%d\n",toplam);
printf("Girdiginiz sayilarin farki:%d\n",fark);
printf("Girdiginiz sayilarin carpimi:%d\n",carpim);
printf("Girdiginiz sayilarin bolumu:%.5f",bolum);

}

include <stdio.h>
int main()
{
   int first, second, add, subtract, multiply;
   float divide;
   printf("Enter two integers\n");
   scanf("%d%d", &first, &second);
   add = first + second;
   subtract = first - second;
   multiply = first * second;
   divide = first / (float)second;   //typecasting
   printf("Sum = %d\n",add);
   printf("Difference = %d\n",subtract);
   printf("Multiplication = %d\n",multiply);
   printf("Division = %.2f\n",divide);
   return 0;
}