prvocislo

#include <stdio.h>
#include <math.h>

int delime(int delitel, int delenec) {
        if((delenec%delitel) == 0)
                return 1;
        else
                return 0;
}

int main(void)
{
        int cislo, exitStatus, kurzor;
        float odmocnina;

        printf("Enter your integer: ");
        exitStatus = scanf("%d", &cislo);

        if(exitStatus == 1) {
                if (cislo <= 0) {
                        printf("It seems you have entered too big number!\n");
                        return 1;
                }
        }
        else {
                printf("You should enter number!\n");
                return 1;
        }

        if (cislo == 1) {
                printf("1 is not prime number.\n");
                return 0;
        }

        if (cislo == 2) {
                printf("2 is prime number.\n");
                return 0;
                }

        if(delime(2, cislo)) {
                printf("%d is not prime number!\n", cislo);
                return 0;
        }

        odmocnina = sqrtf(cislo);
        kurzor = 3;
        while(kurzor <= odmocnina) {
                if(delime(kurzor, cislo)) {
                        printf("%d is not prime number!\n", cislo);
                        return 0;
                }
                kurzor = kurzor + 2;
        }
         printf("%d is prime number!\n", cislo);
}