C Programming Switch Help

I'm Getting the following error and I don't know whats wrong with my code?

For your purposes, C only supports integer values for labels.

You may want to actually resolve those characters to their ASCII integer representation, then substitute those in.

what do you intend to do in in this program?

in switch statements you need to use integer values... not characters...

example:

#include<stdio.h>
int main()
{
int input;

printf("please choose a number (1, 2, 3) :");
scanf("%d", &input);

switch (input)
{
case 1:
printf("You chose number 1.");
break;
case 2:
printf("You selected number 2.");
break;
case 3:
printf("You like number 3?");
break;
default:
printf("You entered an invalid number!");
}
fflush(stdin);
getchar();
return 0;
}

I'm buiilding a payroll program. Can anyone tell me why it is crashing after I enter hourly rate?
And also If I were to add more than one employee I probably couldn't use same variable like in case 2:
Any suggestions for better approach or am I doing it right?




int main(){

int input;
char lastName[30];
char firstName[30];
double rate;
int hours;

printf("Payroll Program Menu\n\nAdd New Employee(type '1')\n\nPrint the Paycheck(type '2')\n\nExit Program(type '3')\n");
scanf ("%d", &input);
switch (input){
case 1:
printf ("Add New Employee\n");
printf ("\nPlease Enter First Name\n");
scanf("%s", firstName);
printf ("\nPlease Enter Last Name\n");
scanf("%s", lastName);
printf ("\nPlease Enter Hourly Rate\n");
scanf("%lf", rate);
printf ("\nPlease Enter Hours Worked\n");
scanf("%d", hours);

break;
case 2:
printf ("Please enter employee's last name\n");
scanf ("&s", lastName);
break;
case 3:
printf ("Goodbye\n");
break;
}




system ("pause");
}