执行我的代码时出现分段错误（核心转储）错误

Question

我正在为我的 C 编程做一个项目 class 一切都在进行，直到我在第 22 行添加了一个 while 循环以便运行一遍又一遍地打印代码基于用户输入的三角形。代码的第一次迭代仍然有效，但是当它需要输入来确定如何更新代码并再次运行时，我遇到了段错误，我不明白为什么。我的代码如下：

#include <stdio.h>
#include <string.h>

int main() {
    int size = 0;
    char symbol = ' ';
    int i = 0;
    int space = 0;
    int n = 0;
    int oldSize = 0;
    char oldSymbol = ' ';
    char menuChoice = ' ';
    
    printf("Please enter the size of the triangle (2-40): ");
    scanf("%d", &size);
    printf("Please enter the character you would like to use: ");
    scanf(" %c", &symbol);
    
    oldSize = size;
    oldSymbol = symbol;
    
    while (menuChoice != 'Q' || menuChoice != 'q') {
        if (size < 2 || size > 40) {
            size = 5;
            symbol = '*';
            printf("Error: Size outside bounds. Printing default triangle: \n");
        }
        for(i = 1; i <= size + 1; ++i, n = 0) {
            for(space = 1; space <= size + 1 - i; ++space) {
                printf(" ");
            }
            while (n != i - 1) {
                printf("%c ", symbol);
                ++n;
            }
            printf("\n");
        }
    
        printf("G: Grow the current triangle\n");
        printf("S: Shrink the current triangle\n");
        printf("N: Draw a new triangle\n");
        printf("Q: Quit\n");
    
        scanf(" %c", menuChoice);
    
        if (menuChoice == 'G' || menuChoice == 'g') {
            size = size + 1;
            
        } else if (menuChoice == 'S' || menuChoice == 's') {
            size = size - 1;

        } else if (menuChoice == 'N' || menuChoice == 'n') {
            size = oldSize;
            symbol = oldSymbol;
            
        } else {
            printf("Error: please enter a valid argument.");
        }
    }
    printf("Goodbye");
}

Answer 1

scanf(" %c", menuChoice);

显然不正确，你知道如何从你上传的代码中的其他地方调用它。你要

scanf(" %c", &menuChoice);

我没有发现任何其他类似的错误，并且此代码中没有其他指针构造，因此应该到此结束。

执行我的代码时出现分段错误（核心转储）错误

Getting a Segmentation fault (core dumped) error when I execute my code

c

while-loop

segmentation-fault