## Introduction

I have used Code::blocks 12 compiler for debugging purpose. But you can use any C programming language compiler as per your availability.

#include <stdio.h> // Function declarations int isPrime(int num); void printPrimes(int lower, int upper); int main() { int lower, upper; printf("Enter the lower and upper limit to list primes: "); scanf("%d%d", &lower, &upper); // Calling function to print all primes between the given range. printPrimes(lower, upper); return 0; } // Print all prime numbers between lower limit and upper limit. void printPrimes(int lower, int upper) { printf("List of prime numbers between %d to %d are: ", lower, upper); while(lower <= upper) { // Printing if current number is prime if(isPrime(lower)) { printf("%d ", lower); } lower++; } } //Checking whether a number is prime or not int isPrime(int num) { int i; for(i=2; i<=num/2; i++) { /* If the number is divisible by any number other than 1 and self then it is not prime */ if(num % i == 0) { return 0; } } return 1; }