Error code when compiling Clang in C


#1

I wrote this code (see below the notification) and was hoping someone can help me:
When compiling with Clang (program name).c I get the following notification:
/tmp/Adder-3ece83.o: In function main': Adder.c:(.text+0x22): undefined reference toGetString’
Adder.c:(.text+0x53): undefined reference to `GetInt’
clang: error: linker command failed with exit code 1 (use -v to see invocation)

CODE I WROTE:

#include <cs50.h>
#include <stdio.h>
#include <string.h>

int main(void)
{
    
    printf("Hello, what is your name? \n") ;
    string s = GetString() ;
    printf("Hello %s\n", s) ;   
    printf("How many stars do you want to print? \n") ;
    int number = GetInt() ;
    printf("Thank you %s, I will print %d stars \n", s, number) ;
        // string star = "*" ;
    
    for (int v = 0 ; v < number ; v++) //v for vertical
    {
        printf("g*\n");
        printf("g*");
        
        for (int h = 0 ; h < v ; h++) //h for horizontal
            {
                printf("f*");
   
            }
        
    }

Thank you

Sivan