输入1个整数显示*

//
//  main.c
//  输一个整数显示*
//
//  Created by 毛遵杰 on 2018/11/15.
//  Copyright © 2018 毛遵杰. All rights reserved.
//

#include <stdio.h>
int main(void)
{
    int i,num;
    
    do {
        printf("please enter a number\n");
    scanf("%d",&num);
    if (num<=0)
    {
        printf("please do not enter the no interanger\n");
    }
    } while (num<=0);
    do {
       
        for (i=1;i<=num;i++)
        
            printf("*");
            putchar('\n');
        
        printf("whether you wish continue enter 'return',or put 0 to end the loop\n");
        
        printf("please enter a num again\n");
      
        
      
        
        
        scanf("%d",&num);
        }while(num!=0);
    return 0;
    
    
}