整型栈是一种先进后出的存储结构，对其进行的操作通常包括判断栈是否为空、向栈顶添加一个整型元素、出栈等。整型栈类型及其操作函数采用非面向对象的纯C语言定义，请将完成上述操作的所有函数采用纯C语言编程， 然后写一个main函数对栈的所有操作函数进行测试。-Integer stack is advanced out after a storage structure, operating its typically include determining whether the stack is em