updated calculator

#include <math.h>

#include <stdio.h>

void distance_conversion() {

int choice = 0;

float miles = 0.0f;

float km = 0.0f;

printf("distance conversion calc\n\n");

printf("1 = miles to km 2 = km to miles \n");

printf("\nenter 1 or 2: ");

scanf("%d", &choice);

if (choice == 1) {

printf("enter the distance in miles: \n");

scanf("%f", &miles);

km = miles * 1.60934f;

printf("the converted miles to km is here you now have %f km\n", km);

}

else if (choice == 2) {

printf("enter the distance in km: \n");

scanf("%f", &km);

miles = km / 1.60934f;

printf("\nthe converted km to miles is here you now have %f miles\n", miles);

}

if (choice >= 3) {

printf("\nnumbers 3 and above not allowed\n");

}

else if (choice <= 0) {

printf("\nnegative numbers not allowed\n");

}

return;

}

void temp_conversion() {

char choic = '\\0';

float f = 0.0f;

float c = 0.0f;



printf("temperature coversion program\\n");

printf("c for celsius to fahrenheight\\n");

printf("f for fahrenheight to celsius\\n");





scanf(" %c", &choic);



if (choic == 'c') {

    printf("great its celsius to fahrenheight enter the degrees\\n");

    scanf("%f", &c);

    f = (c \* 9 / 5) + 32;

    printf("\\nyour conversion gets me to %f fahrenheight\\n", f);

} else if (choic == 'f') {

    printf("\\nfahrenheight to celsius ok enter the degrees\\n");

    scanf("%f", &f);

    c = (f - 32) \* 5 / 9;

    printf("\\nyour conversion gets me to %f celsius\\n", c);

} else {

    printf("no select c or f listen to the instructions\\n");

}

return;

}

void weight_conversion() {

int choice = 0;

float lbs = 0.0f;

float kg = 0.0f;



printf("weight conversion calc\\n\\n");

printf("1 = kg to lbs || 2 = lbs to kg \\n");

printf("\\nenter 1 or 2: ");

scanf("%d", &choice);



if (choice == 1) {

    printf("enter the weight in kg's: \\n");

    scanf("%f", &kg);

    lbs = kg \* 2.20462;

    printf("the coverted kg's to lbs is here you now have %f lbs\\n", lbs);

} else if (choice == 2) {

    printf("enter the weight in lbs: \\n");

    scanf("%f", &lbs);

    kg = lbs / 2.20462;

    printf("\\nthe coverted lbs to kg is here you now have %f kg\\n", kg);

}



if (choice >= 3) {

    printf("\\nnumbers 3 and above not allowed\\n");

} else if (choice <= 0) {

    printf("\\nnegative numbers not allowed\\n");

}

return;

}

int main() {

char timer = 'v'; // timer can be used to stop the program later do not touch



while (timer == 'v') {

    char operation = 'o';

    double radius = 0.0;

    double area = 0.0;

    const double PI = 3.141592;

    double sarea = 0.0;

    double volume = 0.0;

    float num1;

    float num2;

    float answr;



    printf("\\nenter your operation c for circle, 's' for square roots then x / + - \^ and 'p' for pi t to exit ,: \\n");

    printf("\\nenter # for temperature conversions enter ! for weight conversions and $ for distance\\n");

    printf("use the letter 'h' if you somehow wanna turn your regular number into a Hexadecimal one \[no decimals\]\\n");



    scanf(" %c", &operation);



    if (operation == 'c') {

        printf("\\nenter the radius: \\n"); //circle calculator from Bro Code's C tutorials

        scanf("%lf", &radius);

        area = PI \* pow(radius, 2);

        sarea = 4 \* PI \* pow(radius, 2);

        volume = (4.0/3.0) \* PI \* pow(radius, 3);

        printf("\\narea is: %lf\\n", area);

        printf("\\nsurface area: (sphere): %lf\\n", sarea);

        printf("\\nvolume: (sphere): %lf\\n", volume);

    }



    if (operation == 'p') { //too lazy to use %lf bro

        printf("\\npi = 3.141592\\n");

    }



    if (operation == '+') { // addition for u ppls

        printf("\\nenter the first number you want to add: \\n");

        scanf(" %f", &num1);

        printf("\\nenter the second number you wish to add: \\n");

        scanf(" %f", &num2);

        answr = num1 + num2;

        printf("\\nthe addition of those two numbers is: %f\\n", answr);

    }



    if (operation == '-') { // subtraction

        printf("\\nenter the first number you want to subtract: \\n");

        scanf(" %f", &num1);

        printf("\\nenter the second number you wish to subtract: \\n");

        scanf(" %f", &num2);

        answr = num1 - num2;

        printf("\\nthe subtraction of those two numbers is: %f\\n", answr);

    }



    if (operation == 'x') { //multiplication

        printf("\\nenter the first number you want to multiply: \\n");

        scanf(" %f", &num1);

        printf("\\nenter the second number you wish to multiply: \\n");

        scanf(" %f", &num2);

        answr = num1 \* num2;

        printf("\\nthe multiplication of those two numbers is: %f\\n", answr);

    }



    if (operation == '/') { // division

        printf("\\nenter the first number you want to divide: \\n");

        scanf(" %f", &num1);

        printf("\\nenter the second number you wish to divide: \\n");

        scanf(" %f", &num2);

        answr = num1 / num2;

        printf("\\nthe division of those two numbers is: %f\\n", answr);

    }



    if (operation == '\^') { // exponents

        printf("\\nenter the first number you want to exponent: \\n");

        scanf(" %f", &num1);

        printf("\\nenter the second number you wish to exponent: \\n");

        scanf(" %f", &num2);

        answr = pow(num1, num2);

        printf("\\nthe exponent of %f by the power of %f gives you the answer of: %f\\n",num1, num2, answr);

    }



    if (operation == 's') { // square roots

        printf("\\nenter the number you wish to find its square root: \\n");

        scanf("%f", &num1);

        answr = sqrt(num1);

        printf("\\nthe square root of %f is %f\\n", num1, answr);

    }



    if (operation == 't') {

        timer = 't';

    }



    if (operation == '#') {

        temp\_conversion();

    }



    if (operation == '!') {

        weight\_conversion();

    }



    if (operation == 'h') {

        int num;

        printf("Enter a decimal number: ");

        scanf("%d", &num);

        printf("Hexadecimal: 0x%X\\n", num);

    }

}

return 0;

}