Determine if the numbers between 2 and 9 are prime numbers

/* Determine if the numbers between 2 and 9 are prime numbers */

#include <stdio.h>

int main()

{

int c, number, i=0;

printf(\"Enter a number between 2 and 9 \ \");

scanf(\"%d\", &number);

for ( c = 2; c <= number; c++);

{

   if(c % i == 0)

number = number + 1;

}

switch(number)

{

case 2:

case 3:

case 5:

case 7:

       printf(\"You entered a prime number \ \");

break;

case 4:

case 6:

case 8:

   printf(\"You entered a composite number \ \");

break;

default:

   printf(\"Invalid value entered.\ \");

}

return 0;

}

This is the program i wrote for my C problem, I think I\'m having difficulty determining if the number is prime. I don\'t know where I went wrong. It has to be a switch statement.

Solution

Program:

#include <stdio.h>

int main()
{
int c, number, i=0;

printf(\"Enter a number between 2 and 9 : \ \");
scanf(\"%d\", &number);

for(c=2;c<=number/2;c++){
if(number%i==0){
i = i + 1;
}
}
switch(number)
{
case 2:
case 3:
case 5:
case 7:
printf(\"You entered a prime number \ \");
break;
case 4:
case 6:
case 8:
printf(\"You entered a composite number \ \");
break;
default:
printf(\"Invalid value entered.\ \");

}
return 0;
}

Output:

Enter a number between 2 and 9 : 2
You entered a prime number