c - 使用未声明的标识符 'o'

Question

#include <stdio.h>
#include <cs50.h>

int main(void) 
{
    int height;
    {
        printf("Please select a height value between 1-23.");
        height = GetInt();

        while (height < 1 || height > 23)
        {
            printf("Height mustbe between 1-23, please choose new value.\n");
            height = GetInt();
        }
        {
            for (int n = 0; n < height; n++)

            for (int o = 0; o + n + 1 < height; o++)
            {
                printf(" ");
            }            
            for (int p = 0; p <= o; p++)
            {
                printf("#");
            }
        }
    }
}

//我不断收到此错误:

使用未声明的标识符“o”。 for (int p = 0; p <= o; p++) ^

我在其上方的行中声明了“0”，我似乎无法弄清楚为什么它会给我这个错误。请帮助，我对 c 非常陌生，非常感谢任何见解。谢谢!

Answer 1

    for (int o = 0; o + n + 1 < height; o++)
    {
        printf(" ");
    } 

    /* o is now out-of-scope */

标识符o的范围在}之后停止。