"‘itoa‘ was not declared in this scope" 错误

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itoa函数不是ANSI(American National Standards Institute) C的标准, 应该避免使用这个函数.

简易替代版本为:

//itoa(i, s, 10);
snprintf(s, sizeof(s), "%d", i);

C++ - "'itoa' was not declared in this scope" 错误