#include <stdio.h>
typedef enum {
    false,
    true
}bool; // this is a boolean declaration.

bool ask_question(void);

int main(void) {
    int input;
    bool answer;

    while(true) {
        printf("input : ");
        scanf("%d", &input);

        for(int i = 1; i <= input; i++) {
            for(int j = 1; j <= i; j++){
                printf("*");
            }
            printf("\n");
        }

        answer = ask_question();

        if(answer == false)
            break;

        else
            continue;
    }

    return 0;
}

bool ask_question(void) {
    /**
     * note that this function just make sure that the user enteredonly  '1' or '0' and nothing else that that.
     * you can modify this this function to get a 'yes' or 'no' answer or (y/n) answer.
     */
    int temp;
    while(true) {
        printf("would you like to continue ? (1/0) ");
        scanf("%d", &temp);

        if(temp == 1) {
            return true;
        }

        else if(temp == 0) {
            return false;
        }
    }
}