Question

I want to use a get choice function to let user choose a letter from a menue, and i want to use this value to switch it in a float function…i know its only possible to use switch as type int, but will the value i will get is going to be float?

float calc(float number1, float number2)

{
int answer = get_choice();

switch (answer)
    {
        case 'a':
            answer = number1 + number2;
            break;
        case 's':
            answer = number1 - number2;
            break;
        case 'm':
            answer = number1 * number2;
            break;
        case 'd':
            answer = number1 / number2;
            break;
    }
return answer; }

char get_choice(void)

{
int choice;

printf("Enter the operation of your choice:\n");
printf("a. add        s. subtract\n");
printf("m. multiply   d. divide\n");
printf("q. quit\n");

while ((choice = getchar()) == 1 && choice != 'q')
{

    if (choice != 'a' || choice != 's' || choice != 'm' || choice != 'd')
    {
        printf("Enter the operation of your choice:\n");
        printf("a. add        s. subtract\n");
        printf("m. multiply   d. divide\n");
        printf("q. quit\n");
        continue;
    }


}
return choice; }

Answer 1

float calc(float number1, float number2)

{ int choice = get_choice();
  float answer = 0.0;

  switch (choice)

There is no need to reuse the variable. You can also switch a char variable directly.