Nested if statement in C - why doesn't it evaluate the last else if?

The following code does not execute the last else if statement when you assign to choice value 3.

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


int main() {
 puts("Specify with a number what is that you want to do.");
 puts("1. Restore wallet from seed.");
 puts("2. Generate a view only wallet.");
 puts("3. Get guidance on the usage from within monero-wallet-cli.");


 unsigned char choice;
 
 choice = getchar();
 
 
 if ( choice == '1' ) {
 
  
 system("nice -19 ~/monero-x86_64-linux-gnu-v0.17.2.0/monero-wallet-cli --testnet --restore-deterministic-wallet");
 
  exit(0);
  }
 else if ( choice == '2' ) {
 
  system("nice -19 ~/monero-x86_64-linux-gnu-v0.17.2.0/monero-wallet-cli --testnet --generate-from-view-key wallet-view-only");
  exit(0);
  }
 else if ( choice == '3' ) {
    
   puts("Specify with a number what is that you want to do.");
   puts("1. Get guidance in my addresses and UTXOs");
   puts("2. Pay");
   puts("3. Get guidance on mining.");
    
    unsigned char choicetwo = getchar();
     if ( choicetwo == '1' ) {
      
      printf("Use \033address all\033 to get all your addresses that have any balance, or that you have generated at this session.");
      printf("Use \033balance\033 to get your balance");
      printf("Use \033show_transfers\033 to get ");
      printf("Use \033show_transfers\033 out to get ");
      printf("Use \033show_transfers in\033 to get your balance");
      } }

  

return 0;   
}

I get the following output When I enter 3:

Specify with a number what is that you want to do.
1. Restore wallet from seed.
2. Generate a view only wallet.
3. Get guidance on the usage from within monero-wallet-cli.
3
Specify with a number what is that you want to do.
1. Get guidance in my addresses and UTXOs
2. Pay
3. Get guidance on mining.

I'm really blocked, something is missing and I have no clue why it does not proceed to take the input from the user for the second time.