Untitled

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
int exits=0,points=0,challenge=0,randomizer;
char anagram_1st[]="listen",anagram_2nd[]="earth",anagram_3rd[]="binary";
char cipher_1st[]="There is a secret code",cipher_2nd[]="Attack at dawn",cipher_3rd[]="Meet me at the park";
char word_1st[]="program",word_2nd[]="network",word_3rd[]="science";
void show_menu()
{
    int n;
    printf("Welcome to the Game World!\n1. Start Game\n2. Exit\nEnter your choice: ");
    scanf("%d",&n);
    printf("\n");
    if(n==2)
    {
        printf("Game Over!\nYour total score: 0 points\n");
        exits=1;
    }
}

void score(int n)
{
    points+=n;
}

void completion()
{
    challenge+=1;
}

void random_number()
{
    srand(time(0));
    randomizer=rand()%3;
}

void scramble(char string[])
{
    int count=0,j=0,k;
    while(string[j]!='\0')
    {
        count++;
        j++;
    }
    char str_1st=string[0],str_last=string[count-1];
    do{
    k=0;
    while(k<count)
    {
        int pos1=rand()%count;
        int pos2=rand()%count;
        if(pos1!=pos2)
        {
            char temp=string[pos1];
            string[pos1]=string[pos2];
            string[pos2]=temp;
        }
        k++;
    }
    }while(string[0]==str_1st || string[count-1]==str_last);
}

void caesar_encrypt(char string[])
{
    int shift = 3,i;
    for (i=0; string[i]!='\0'; i++)
    {
        if (string[i]>='A' && string[i]<= 'Z')
        {
            string[i] = 'A' + (string[i]-'A'+shift)%26;
        }
        if (string[i]>='a' && string[i]<='z')
        {
            string[i] = 'a' + (string[i]-'a'+shift)%26;
        }
    }
}

void caesar_decrypt(char string[])
{
    int shift=3,i;
    for (i=0; string[i]!='\0'; i++)
    {
        if (string[i]>='A' && string[i]<='Z')
        {
            string[i] = 'A' + (string[i]-'A'-shift+26)%26;
        }
        if (string[i]>='a' && string[i]<='z')
        {
            string[i] = 'a' + (string[i]-'a'-shift+26)%26;
        }
    }
}

void stringcopy(char string1[],char string2[])
{
    int i=0;
    while(string1[i]!='\0')
    {
        string2[i]=string1[i];
        i++;
    }
    string2[i]='\0';
}

int stringcompare(char string1[], char string2[])
{
    int i=0,k=1;
    while(string1[i]!='\0')
    {
        if(string1[i]!=string2[i])
        {
            k=0;
            break;
        }
        i++;
    }
    return k;
}

int stringlength(char string1[])
{
    int count=0,i=0;
    while(string1[i]!='\0')
    {
        count++;
        i++;
    }
    return count;
}

void checksubstring(char string1[], char string2[])
{
    int count1=0,count2=0,i=0,j=0;
    while(string1[i]!='\0')
    {
        count1++;
        i++;
    }
    while(string2[j]!='\0')
    {
        count2++;
        j++;
    }
    int p,n,mil,bool=0;
    if(count2>count1) printf("No\n");
    else
    {
        for(i=0; string1[i]!='\0'; i++)
        {
                if(string1[i]==string2[0])
                {
                    p=i+1,n=1,mil=1;
                    while(string1[p]==string2[n])
                    {
                        mil++;
                        p++;
                        n++;
                    }
                }
                if(mil==count2)
                {
                    bool=1;
                    break;
                }
        }
    }
    if(bool==1) printf("Yes\n");
    else printf("No\n");
}

void anagram_play(char anagram[])
{
    printf("Starting Anagram Challenge...\n");
    int cha=stringlength(anagram);
    char copy[cha],what[30];;
    stringcopy(anagram,copy);
    scramble(anagram);
    int runs=1;
    printf("Scrambled word: %s\n",anagram);
    while(runs<4)
    {
        printf("Your guess: ");
        scanf("%s", what);
        if(stringcompare(copy,what)==1)
        {
            printf("Correct! You solved it in %d attempt(s)\n\n",runs);
            score(10*(3-runs)+10);
            completion();
            break;
        }
        else
        {
            runs++;
            if(runs>3) break;
            printf("Incorrect! Try again.\n");
        }
    }
    if(runs>3) printf("You have failed! Correct answer was: %s\n\n",copy);
}

void caesar_cipher(char cipher[])
{
    printf("Starting Caesar Cipher Challenge...\n");
    int attempts=1;
    char guess[100];
    caesar_encrypt(cipher);
    printf("Encrypted phrase: %s\n",cipher);
    caesar_decrypt(cipher);
    getchar();
    while(attempts<4)
    {
        printf("Your guess: ");
        fgets(guess,sizeof(guess),stdin);
        if(stringcompare(cipher,guess)==0)
        {
            if(attempts==3) break;
            printf("Incorrect! Try again.\n");
        }
        else
        {
            printf("Correct! You decrypted it in %d attempt(s).\n\n",attempts);
            score(10*(3-attempts)+10);
            completion();
            break;
        }
        attempts++;
    }
    if(attempts==3 && stringcompare(cipher,guess)==0)
    {
        printf("You have failed! Correct answer was: %s\n\n",cipher);
    }
}

void word_guessing(char word[])
{
    printf("Starting Word Guessing Challenge...\n");
    int key,time2=0,time3=0,trys=1,utility=0;
    char shoot[100];
    printf("Hint: %c%c%c______\n",word[0],word[1],word[2]);
    printf("Select an option: 1. Write Answer 2. Check Substring 3. Check Length\n");
    while(trys<4)
    {
        scanf("%d",&key);
        if(key==2)
        {
            if(time2==0)
            {
                printf("Enter substring: ");
                char sub[100];
                scanf("%s",sub);
                checksubstring(word,sub);
                utility++;
                score(-2);
            }
            else
            {
                printf("Error: Utility function already used.\n");
            }
            time2++;
        }
        if(key==3)
        {
            if(time3==0)
            {
                int userlength;
                printf("Enter length: ");
                scanf("%d",&userlength);
                if(userlength==stringlength(word)) printf("Yes\n");
                else printf("No\n");
                utility++;
                score(-2);
            }
            else
            {
                printf("Error: Utility function already used.\n");
            }
            time3++;
        }
        if(key==1)
        {
            printf("Enter your guess: ");
            scanf("%s",shoot);
            if(stringcompare(word,shoot)==0)
            {
                if(trys==3) break;
                printf("Incorrect! Try again.\n");
            }
            else
            {
                if(utility==1)
                    printf("Correct! You guessed it in %d attempt(s) using one utility function.\n\n",trys);
                else if(utility==2)
                    printf("Correct! You guessed it in %d attempt(s) using two utility functions.\n\n",trys);
                else
                {
                    printf("Correct! You guessed it in %d attempt(s) without any utility function.\n\n",trys);
                }
                score(10*(3-trys)+10);
                completion();
                break;
            }
            trys++;
        }
    }
    if(trys==3 && stringcompare(word,shoot)==0) printf("You have failed!\nCorrect answer was: %s\n\n",word);
}

int main()
{
    show_menu();
    if(exits==1) return 0;
    random_number();
    if(randomizer==0)
        anagram_play(anagram_1st);
    else if(randomizer==1)
        anagram_play(anagram_2nd);
    else anagram_play(anagram_3rd);
   // printf("random num was: %d\n",randomizer);

    random_number();
    if(randomizer==0)
        caesar_cipher(cipher_1st);
    else if(randomizer==1)
        caesar_cipher(cipher_2nd);
    else caesar_cipher(cipher_3rd);
    // printf("random num was: %d\n",randomizer);

    random_number();
    if(randomizer==0)
        word_guessing(word_1st);
    else if(randomizer==1)
        word_guessing(word_2nd);
    else word_guessing(word_3rd);
    // printf("random num was: %d\n",randomizer);


    if(challenge==3) score(5);
    printf("Game Over!\nYour total score: %d points",points);
    return 0;
}