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this is my edited codes


#include<stdio.h>
#include<stdlib.h>

bool prime_num (int *user_entry); //function prototype

int main(void)
{

what is wrong with my program that i cant run smoothly. there is an error in this line
result = prime_num(&user_entry); //prime number detector function

how do i solve the three unresolced external symbols. i know it has got to do i with the function calling. but not sure how to solve it.
any advice on what logic should i use to do error warnings...

ive taken you guy's advice thanks alot. and this is an revised version of the program. but i still have errors. can anyone help me with it. i still can't figure out how to solve it. thanks. if...

i am new with c. i was using c++ before this. i dont get it why i cant get it to work with so many error. can someone show me the correct way.
i was wondering which is the best function to use in...