90% of /prog/ cannot write this BASIC PROGRAM

Task: Using your language of choice, implement a program that will a) Prompt the user for 2 numbers, and b) output the number of prime numbers between the two numbers (inclusive.)

Output: A B N

float fTemp1 = 0.0f,
fTemp2 = 1.0f,
fResult = 0.0f;

while(fResult < INT_MAX){
     fResult = fTemp2 / fTemp1;
}