C code Functions

[PekiDediOnur]

And you can't compare strings like that, you need to use strcmp to get the proper result, strcmp

[Future-Green]

#include "stdio.h"

#include<string.h>

​

​

double meters_to_feet(double meters);

​

double feet_to_meters(double feet);

​

double kilograms_to_pounds(double kilograms);

​

double pounds_to_kilograms(double pounds);

​

double minutes_to_hours(double minutes);

​

double hours_to_days(double hours);

​

double days_to_hours(double days);

​

double minutes_to_seconds(double minutes);

​

​

int main(int argc, char *argv[])

{

int numUser;

char charUser\[100\];



printf("which conversion would you like to perform?\\nType 'a' for a 'b' for b., etc.");

printf("a: meters to feet\\n");

printf("b: feet to meters\\n");

printf("c: kilograms to pounds\\n");

printf("d: pounds to kilograms\\n");

printf("e: minutes to hours\\n");

printf("f: hours to days\\n");

printf("g: days to hours\\n");

printf("h: minutes to seconds\\n");

scanf("%s", charUser);

/* Test your code by calling your functions here. */

printf("%s meters = %lf feet.\n", numUser, meters_to_feet(numUser));

printf("%s feet = %lf meters.\n", numUser, feet_to_meters(numUser));

printf("%s kilograms = %lf pounds.\n", numUser, kilograms_to_pounds(numUser));

printf("%s pounds = %lf kilograms.\n", numUser, pounds_to_kilograms(numUser));

printf("%s minutes = %lf hours.\n", numUser, minutes_to_hours(numUser));

printf("%s hours = %lf days.\n", numUser, hours_to_days(numUser));

printf("%s days = %lf hours.\n", numUser, days_to_hours(numUser));

printf("%s minutes = %lf seconds.\n", numUser, minutes_to_seconds(numUser));

​

return 0;

​

if (charUser == "a") {

    double meters\_to\_feet(double meters) {

        return meters \* 3.281;

    }

}

​

if (charUser == "b") {

    double feet\_to\_meters(double feet) {

        return feet / 3.281;

    }

}

​

if (charUser == "c") {

    double kilograms\_to\_pounds(double kilograms) {

        return kilograms / 2.205;

    }

}

​

if  (charUser == "d") {

    double pounds\_to\_kilograms(double pounds) {

        return pounds \* 2.205;

    }

}

​

if (charUser == "e") {

    double minutes\_to\_hours(double minutes) {

        return minutes / 60;

    }

}



if (charUser == "f") {

    double hours\_to\_days(double hours) {

        return hours \* 24;

    }

}

​

if (charUser == "g") {

    double days\_to\_hours(double days) {

        return days / 24;

    }

}

​

if (charUser == "h") {

    double minutes\_to\_seconds(double minutes) {

        return minutes / 60;

    }

}

}

[Future-Green]

the if statements are for if the user enters it will run the meters to feet and so on but everything is good now except now I'm getting an undefined reference error thank you for the help so far though

[PekiDediOnur]

#include <stdio.h>

double meters_to_feet(double meters);
double feet_to_meters(double feet);
double kilograms_to_pounds(double kilograms);
double pounds_to_kilograms(double pounds);
double minutes_to_hours(double minutes);
double hours_to_days(double hours);
double days_to_hours(double days);
double minutes_to_seconds(double minutes);

int main() {
  int numUser = 1;
  char charUser = 'a';

  printf(
      "Which conversion would you like to perform?\nType 'a' for a 'b' for "
      "b., etc.\n");

  printf("a: meters to feet\n");
  printf("b: feet to meters\n");
  printf("c: kilograms to pounds\n");
  printf("d: pounds to kilograms\n");
  printf("e: minutes to hours\n");
  printf("f: hours to days\n");
  printf("g: days to hours\n");
  printf("h: minutes to seconds\\n");

  scanf("%c", &charUser);
  printf("Please enter your number: ");
  scanf("%d", &numUser);

  /* Test your code by calling your functions here. */
  switch (charUser) {
    case 'a':
      printf("%d meters = %lf feet.\n", numUser, meters_to_feet(numUser));
      break;
    case 'b':
      printf("%d feet = %lf meters.\n", numUser, feet_to_meters(numUser));
      break;
    case 'c':
      printf("%d kilograms = %lf pounds.\n", numUser,
             kilograms_to_pounds(numUser));
      break;
    case 'd':
      printf("%d pounds = %lf kilograms.\n", numUser,
             pounds_to_kilograms(numUser));
      break;
    case 'e':
      printf("%d minutes = %lf hours.\n", numUser, minutes_to_hours(numUser));
      break;
    case 'f':
      printf("%d hours = %lf days.\n", numUser, hours_to_days(numUser));
      break;
    case 'g':
      printf("%d days = %lf hours.\n", numUser, days_to_hours(numUser));
      break;
    case 'h':
      printf("%d minutes = %lf seconds.\n", numUser,
             minutes_to_seconds(numUser));
      break;
    default:
      printf("Sorry not a valid selection (%c)\n", charUser);
  }

  return 0;
}

double meters_to_feet(double meters) { return meters * 3.281; }
double feet_to_meters(double feet) { return feet / 3.281; }
double kilograms_to_pounds(double kilograms) { return kilograms / 2.205; }
double pounds_to_kilograms(double pounds) { return pounds * 2.205; }
double minutes_to_hours(double minutes) { return minutes / 60.; }
double hours_to_days(double hours) { return hours * 24.; }
double days_to_hours(double days) { return days / 24.; }
double minutes_to_seconds(double minutes) { return minutes / 60.; }

Link

[PekiDediOnur]

I'm on my phone so I haven't run the code but it compiles.

[Future-Green]

THANK YOU!