Assignment

#include<stdio.h>
#include<stdlib.h>
#include<ctype.h>
#include<math.h>
#include<stdbool.h>

int menu () {
    int choice;
    printf("----------------Menu-Selector-----------------\n");
    printf("------------------Assignment------------------\n");
    printf("==============================================\n");
    printf("= 1.  Sum of Integers                        =\n");
    printf("= 2.  Swap values                            =\n");
    printf("= 3.  vowels, consonants, others counter     =\n");
    printf("= 4.  ASCII table                            =\n");
    printf("= 5.  ASCII between 2 chars (ascending)      =\n");
    printf("= 6.  Print prime numbers                    =\n");
    printf("= 7.  Date Checker                           =\n");
    printf("= 8.  Relative Position of the circle        =\n");
    printf("= 9.  Print Factorial by n                   =\n");
    printf("= 10. Print Fibonacci sequence by n          =\n");
    printf("= 11. Fibonacci element checker              =\n");
    printf("= 12. Sum Digits                             =\n");
    printf("= 13. Fraction to real number convert        =\n");
    printf("= 14. GCD and LCM by 2 pos int               =\n");
    printf("= 15. Min Max of a nonnegative int           =\n");
    printf("= 16. Small menu with process primes, minmax =\n");
    printf("= Others. Quit                               =\n");
    printf("==============================================\n");
    printf("Please choose one: ");
    scanf("%d", &choice);

    return choice;
}
//EX1
void sumOfInt () {
    int x;
    int S = 0;
    do {
        printf("Input x: ");
        scanf("%d", &x);
        if (x != 0) {
            S = S + x;
        }
    }
    while (x != 0);
    printf("S = %d\n", S);
}

//EX2
void intSwap () {
    int x;
    int y;
    int temp;

    do {
        printf("Input x: ");
        scanf("%d", &x);
        printf("Input y: ");
        scanf("%d", &y);

        temp = x;
        x = y;
        y = temp;

        printf("the Number after swap:\n");
        printf("+x' = %d\n", x);
        printf("+y' = %d\n", y);
    }
    while (x != 0 && y != 0);
}

//EX3
void charCheck () {
    char chars;
    int nVowels = 0;
    int nConsonants = 0;
    int nOthers = 0;

    printf("Enter the string: ");

    do {
        chars = getchar();
        chars = toupper(chars);
        if (chars >='A' && chars <= 'Z') {
            switch (chars) {
                case 'A':
                case 'E':
                case 'I':
                case 'O':
                case 'U':
                    nVowels++;
                    break;
                default:
                    nConsonants++;
            }
        } else {
            if (chars != 10) {
                nOthers++;
            }
        }
    }
    while (chars != '\n');

    printf("Number of vowels: \t%d\n", nVowels);
    printf("Number of consonants: \t%d\n", nConsonants);
    printf("Number of others: \t%d\n", nOthers);
}

//EX4
void asciiTable () {
    int code;
    for (code = 0; code <= 255; code++)
        printf("%c, %d, %o, %X\n", code, code, code, code);
    if (code !=0 && code %20==0) {
        getchar();
    }
}

//EX5
void asciiDiff () {
    char firstChar;
    char secondChar;
    char temporaryChar;
    char charLoop;
    int difference;

    printf("firstChar:  ");
    scanf("%c", &firstChar);
    getchar();
    printf("secondChar: ");
    scanf("%c", &secondChar);

    if (firstChar > secondChar) {
        temporaryChar = firstChar;
        firstChar = secondChar;
        secondChar = temporaryChar;
    }
    difference = secondChar - firstChar;
    printf("difference: %d\n", difference);
    for (charLoop = firstChar; charLoop <= secondChar; charLoop++) {
        printf("%c : %d, %o, %X\n", charLoop, charLoop, charLoop, charLoop);
    }
}

//EX6
int primeChecker (int n) {
    //var
    int m;
    int i;
    //square root of n
    m = sqrt(n);

    if ( n < 2) {
        //Condition 1 is not satisfied
        return 0;
    }
    for (i = 2; i <= m; i++) {
        if (n % i == 0) {
            //n is divided by i
            //n is not a prime
            return 0;
        }

    }
    //n is a prime
    return 1;
}

//EX7
int validDate (int day, int month, int year) {
    //max day of months 1, 3, 5, 7, 8, 10, 12
    int maxDays = 31;

    //Basic checking
    if (day < 1 || day > 31 || month < 1 || month > 12) {
        return 0;
    }

    //update maxd of a month
    if ( month == 4 || month == 6 || month == 9 || month == 11) {
        maxDays = 30;
        }
        else if (month == 2) {
            if (year % 400 == 0 || ( year % 4 == 0 && year % 100 != 0)) {
            maxDays = 29;
            }
            else {
                maxDays = 28;
            }
        }

    return day <= maxDays;
}

//EX8
int getRelPos (double x, double y, double r) {
    //d2= x2+ y2
    double d2 = x*x + y*y;
    //r2
    double r2 = r*r;
    if (d2 < r2){
        return 1;
    }
    else if (d2 == r2) {
        return 0;
    }
    else {
        return -1;
    }
}

//EX9
double factorial (int n) {
    double p;
    int i;
    p = 1;

    for (i = 2; i <= n; i++) {
        p *= i;
    }

    return p;
}

//EX10
double fibo (int n) {
    int t1 = 1;
    int t2 = 1;
    int f = 1;
    int i ;

    for (i = 3; i <= n; i++) {
      f = t1 + t2;
      t1= t2;
      t2=f;
    }
   return f;
}

// EX11
int accept () {
    int n;
    do {
        printf("Type n: ");
        scanf("%d", &n);
    }
    while (n < 1);
    return n;
}

int isFibonacci (int n) {
    int t1=1;
    int t2=1;
    int f=1;
    if (n==1) {
        return 1;           /* n belongs to the Fibonacci sequence*/
    }
    while (f<n) {           /* Find out the Fibo number f to n */
        f= t1 + t2;
        t1=t2;
        t2=f;
    }
    return n == f;          /* if n==f ' n is Fibo element ' return 1 */
}

//EX12
int sumDigits (int n) {
    int sum;
    sum = 0;                        /* initialize sum of digits */
    do {
        int remainder = n % 10 ;    /* Get a digit at unit position */
        n = n/10;
        sum += remainder;
    }
    while (n>0);

    return sum;
}

//EX13
double makeDouble (int ipart, int fraction) {
    double d_f;
    d_f = fraction;
    while (d_f >=1) {
        d_f = d_f/10;               //create the fraction <1
    }
    if (ipart<0) {
        return ipart - d_f;         //case-51 - 0.139
    }
    return ipart + d_f ;            //case 32 + 0.25
}

//EX14
int gcd(int a, int b) {
    while ( a != b )
    if (a > b) {
        a -=b;
    }
    else {
        b -= a;
    }
    return a;
}

int lcm (int a, int b) {
    return a*b/ gcd(a,b);
}

//EX15
void printMinMaxDigits(int n) {
    int digit;                  /* Variable for extracting 1 digit */
    int min, max;               /* Result variables */
    digit = n % 10;             /* get the first rightmost digit: 3 */
    n = n / 10;                 /* 1029, the remainder needs to proceed after*/
    min = max = digit;          /* initialize results */
    while (n>0) {
        digit = n % 10;         /* Get the next digit */
        n=n/10;
        if (min > digit) {
            min = digit;        /* update results */
        }
        if (max < digit) {
            max = digit;
        }
   }
   printf("\nMin = %d", min);
   printf("\nMax = %d", max);
}

//EX16
void menuEX16 () {
    printf("----Select a function----");
    printf("\n1. Process Prime");
    printf("\n2. Print min, max digit in an integer");
    printf("\nother. Exit");
}

void operation1 () {
    int x;
    bool boolean = true;

    printf("insert x: ");
    scanf("%d", &x);

    for (int i = 2; i <= round (sqrt(x)); i++) {
        if (x % i ==0) {
            boolean = false;
            break;
        }
    }
    if (boolean) {
        printf ("X is a prime\n");
    } else {
        printf ("X is not a prime\n");
    }
}

void operation2 () {
    int x;
    int max = 0;
    int remainder;
    printf("insert x: ");
    scanf("%d", &x);

    do {
        remainder = x % 10;
        if (remainder > max) {
            max = remainder;
        }
        x /= 10;
    } while (x > 0);
    printf("%d is the biggest digit of x\n", max);
}
int main () {
    _flushall();
    int i;
    int n;
    int day = 0;
    int month = 0;
    int year = 0;
    double x;
    double y;
    double r;
    int result;
    double sumOfFactor;
    int num;
    double totalOfFibo;
    int sum;
    int a;
    int b;
    int d;
    int m;
    int ipart;
    int fraction;
    double realValue;
    int ex16chose;

    int intMenu;

    do {
        intMenu = menu();
        switch (intMenu) {
            case 1:
                system("cls");
                sumOfInt();
                system("pause");
                break;
            case 2:
                system("cls");
                intSwap();
                system("pause");
                break;
            case 3:
                system("cls");
                charCheck();
                system("pause");
                break;
            case 4:
                system("cls");
                asciiTable();
                system("pause");
                break;
            case 5:
                system("cls");
                asciiDiff();
                system("pause");
                break;
            case 6:
                system("cls");
                n = 0;
                do {
                printf("Enter max range: ");
                scanf("%d",&n);
                }
                while (n < 2);

                for(i = 2; i <= n; i++) {
                    if (primeChecker(i) == 1) {
                        printf("%d, ", i);
                    }
                }

                printf("\n");

                system("pause");
                break;
            case 7:
                system("cls");
                printf("please input the full date (format dd/mm/yyyy): ");
                scanf("%d/%d/%d", &day, &month, &year);

                if(validDate(day,month,year)){
                    printf("Valid\n");
                    }
                    else {
                        printf("Invalid\n");
                    }

                system("pause");
                break;
            case 8:
                system("cls");
                printf("x: ");
                scanf("%lf", &x);
                printf("y: ");
                scanf("%lf", &y);

                do {
                    printf("r: ");
                    scanf("%lf", &r);
                }
                while (r < 0);
                result = getRelPos(x,y,r);
                if (result == 1) {
                    printf("The point is in the circle\n");
                    }
                    else if (result==0) {
                        printf("The point is on the circle\n");
                        }
                        else {
                            printf("The point is out of the circle\n");
                            }

                system("pause");
                break;
            case 9:
                system("cls");
                do {
                    printf("pls input your num to compute facotrial: ");
                    scanf("%d", &num);
                }
                while (num < 0);

                sumOfFactor = factorial(num);

                printf("Total: %0.2lf\n", sumOfFactor);

                system("pause");
                break;
            case 10:
                system("cls");
                do {
                    printf("type your number to compute n^th value by using Fibonacci sequence: ");
                    scanf("%d", &n);
                }
                while (n < 1);

                totalOfFibo = fibo(n);

                printf("total = %0.2lf\n", totalOfFibo);

                system("pause");
                break;
            case 11:
                system("cls");
                n = accept();

                if(isFibonacci(n) == 1){
                    printf("It is a Fibonacci element.\n");
                    } else {
                        printf("It is not a Fibonacci element.\n");
                    }

                system("pause");
                break;
            case 12:
                system("cls");
                do {
                    printf("Type n: ");
                    scanf("%d", &n);
                    if(n > 0) {
                        sum = sumDigits(n);
                        printf("SUM = %d\n", sum);
                    }
                }
                while (n >= 0);

                system("pause");
                break;
            case 13:
                system("cls");
                printf("accept Integral part: ");
                scanf("%d", &ipart);
                do {
                    printf("accept Fraction: ");
                    scanf("%d", &fraction);
                }
                while (fraction < 0);

                realValue = makeDouble(ipart, fraction);

                printf("Real numer is: %0.4lf", realValue);

                printf("\n");

                system("pause");
                break;
            case 14:
                system("cls");
                do {
                    printf("Enter a: ");
                    scanf("%d",&a);
                    printf("Enter b: ");
                    scanf("%d",&b);
                }
                while (a <= 0 || b <= 0);

                d = gcd(a,b);
                m = lcm (a,b);

                printf("d = %d\n", d);
                printf("m = %d\n", m);

                system("pause");
                break;
            case 15:
                system("cls");
                do {
                    printf("Enter n: ");
                    scanf("%d",&n);
                    printMinMaxDigits(n);
                }
                while (n < 0);
                system("pause");
                break;
            case 16:
                system("cls");
                menuEX16();
                scanf("%d", &ex16chose);
                switch (ex16chose) {
                    case 1:
                        operation1();
                        break;
                    case 2:
                        operation2();
                        break;
                    default:
                        printf("exiting");
                        break;
                }
                system("pause");
                break;
            default:
                printf("Good Bye\n");
                system("pause");
                _flushall();
        }
    system("cls");
    } while (intMenu > 0 && intMenu < 17);

    return 0;
}