Reading Numbers in C

check.c

#include <stdio.h>

int ReadInteger() {
  int number;
  char c;

  while (1) {
    // Read token token from stdout, ended by newline
    if (!scanf_s("%d", &number) || getchar() != '\n') {
      // Clear stdout before reading next token
      while ((c = getchar()) != '\n' && c != EOF);
    } else {
      return number;
    }

    printf_s("Incorrect number.\nTry again: ");
  }
}

// Use setlocale(LC_NUMERIC, "C") for period delimeter.
double ReadDouble() {
  double number;
  char c;

  while (1) {
    if (!scanf_s("%lf", &number) || getchar() != '\n') {
      while ((c = getchar()) != '\n' && c != EOF);
    } else {
      return number;
    }

    printf_s("Incorrect number.\nTry again: ");
  }
}

long ReadTime() {
  int hours, minutes;
  char c;

  while (1) {
    if (scanf_s("%d:%d", &hours, &minutes) < 2 || getchar() != '\n') {
      while ((c = getchar()) != '\n' && c != EOF);
    } else if (hours >= 0 && hours <= 23 && minutes >= 0 && minutes <= 59) {
      return hours * 60 + minutes;
    }

    printf_s("Time should be in HH:MM fromat.\nTry again: ");
  }
}