getc, getch, getche and getchar in C

main.c

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

int main(int argc, char* argv[]) {
    int c =  getch();
    printf("Printed char: %c\n", c);
    
    c =  getche();
    printf("Printed char: %c\n", c);
    
    c =  getc(stdin);
    printf("Printed char: %c\n", c);
    
    c =  fgetc(stdin);
    printf("Printed char: %c\n", c);
    
    c =  getchar();
    printf("Printed char: %c\n", c);
    return 0;
}