Hacker Rank C Challenges #003

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 Task

Given a positive integer denoting , do the following:

  • If , print the lowercase English word corresponding to the number (e.g., one for , two for , etc.).
  • If , print Greater than 9.

Input Format

The first line contains a single integer, .

Constraints

Output Format

If , then print the lowercase English word corresponding to the number (e.g., one for , two for , etc.); otherwise, print Greater than 9 instead.

Sample Input

5

Sample Output

five

Sample Input #01

8

Sample Output #01

eight

Sample Input #02

44

Sample Output #02

Greater than 9

code :

#include <assert.h>
#include <limits.h>
#include <math.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

char* readline();



int main()
{
    char* n_endptr;
    char* n_str = readline();
    int n = strtol(n_str, &n_endptr, 10);

    if (n_endptr == n_str || *n_endptr != '\0') { exit(EXIT_FAILURE); }

    // Write Your Code Here
    if (n==1){
        printf("one");
    }else if (n==2){
        printf("two");
    }else if (n==3){
        printf("three");
    }else if (n==4){
        printf("four");
    }else if (n==5){
        printf("five");
    }else if (n==6){
        printf("six");
    }else if (n==7){
        printf("seven");
    }else if (n==8){
        printf("eight");
    }else if (n==9){
        printf("nine");
    }else{
        printf("Greater than 9");
    }
    
    

    return 0;
}

char* readline() {
    size_t alloc_length = 1024;
    size_t data_length = 0;
    char* data = malloc(alloc_length);

    while (true) {
        char* cursor = data + data_length;
        char* line = fgets(cursor, alloc_length - data_length, stdin);

        if (!line) { break; }

        data_length += strlen(cursor);

        if (data_length < alloc_length - 1 || data[data_length - 1] == '\n') { break; }

        size_t new_length = alloc_length << 1;
        data = realloc(data, new_length);

        if (!data) { break; }

        alloc_length = new_length;
    }

    if (data[data_length - 1] == '\n') {
        data[data_length - 1] = '\0';
    }

    data = realloc(data, data_length);

    return data;
}



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