今天我遇到了C ++问题，需要帮助 [英] Today I had trouble in a C++ question need help

问题描述

int *pi;
for(*pi=0; *pi<5; *pi++)

此代码中的逻辑错误是什么?还是有任何错误?

What is the logical mistake in this code? Or is there any false?

推荐答案

首先，尝试为pi分配一个值:

Firstly, try assigning a value to pi:

int* pi = &integerVariable;

然后，尝试增加内容，而不是指针:
(* pi)++而不是* pi ++

Then, try incrementing the content, rather than the pointer:
(*pi)++ instead of *pi++

您已将pi声明为指向整数的指针，但尚未初始化它，则它指向随机地址；然后在for循环中，您使用的是pi拥有的随机地址.这可能会导致严重的问题，例如内存损坏，内存保护错误等.

You have declared pi as a pointer to integer, but you have not initialized it, then it points to a random address; then in the for loop you are using the random address that pi holds. This could cause serious problems as memory corruptions, memory protection faults, etc.

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