C/Visual C - ESTUDIANTE

#include <stdio.h>

#include <string.h>

void convertToWords(int num) {

    // Arrays para las palabras correspondientes

    const char *ones[] = { "", "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine" };

    const char *teens[] = { "Ten", "Eleven", "Twelve", "Thirteen", "Fourteen", "Fifteen", "Sixteen", "Seventeen", "Eighteen", "Nineteen" };

    const char *tens[] = { "", "", "Twenty", "Thirty", "Forty", "Fifty", "Sixty", "Seventy", "Eighty", "Ninety" };

    const char *thousands[] = { "", "Thousand" };

    if (num == 0) {

        printf("Zero\n");

        return;

    }

    if (num >= 1000) {

        printf("%s ", ones[num / 1000]);

        printf("%s ", thousands[1]);

        num %= 1000;

    }

    if (num >= 100) {

        printf("%s Hundred ", ones[num / 100]);

        num %= 100;

    }

    if (num >= 20) {

        printf("%s ", tens[num / 10]);

        num %= 10;

    } else if (num >= 10) {

        printf("%s ", teens[num - 10]);

        return;

    }

    if (num > 0) {

        printf("%s ", ones[num]);

    }

}

int main() {

    int number;

    printf("Ingrese un número: ");

    scanf("%d", &number);

    printf("El número en palabras es: ");

    convertToWords(number);

    printf("\n");

    return 0;

}