blocks.c

#include<stdio.h>

void sayhello(){
    printf("Hello World");
}
int main(){
    int num;
    char* number;
    do{ 
        printf("\njust say some number: ");
        scanf("%d",&num);
        if(num==0){
            number = "zero";
        }else if(num%2==1){
            number = "odd";
        }else if(num%2==0){
            number="even";
        } else {
            number = "impossible. don't worry. you'll never get here.";
        }
        switch(number[0]){
            case 'e': printf("you have entered an even number");break;
            case 'o': printf("you have entered an odd number");break;
            case 'z': printf("you have entered zero. so let's just call it even.");break;
            default: printf("what kind of sorcery is this?");}
    }while(1);
return 0;
}

blocks.py

def sayhello():
    print("HelloWorld")
while True:
    num = int(input("\njust say some number: "))
    if(num==0):
        number = "zero"
    elif(num%2==1):
        number = "odd"
    elif(num%2==0):
        number="even"
    else:
        number = "impossible. don't worry. you'll never get here."
        
    if(number[0] == 'e'):
        print("you have entered an even number")
    elif(number[0] == 'o'):
        print("you have entered an odd number")
    elif(number[0] == 'z'):
        print("you have entered zero. so let's just call it even.")
    else: 
        print("what kind of sorcery is this?")