support bazel complie this project and format code.
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8
basic_content/func_pointer/BUILD
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8
basic_content/func_pointer/BUILD
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# please run `bazel run basic_content/func_pointer:func_pointer`
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load("@rules_cc//cc:defs.bzl", "cc_binary")
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cc_binary(
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name = "func_pointer",
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srcs = ["func_pointer.cpp"],
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copts = ["-std=c++11"]
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)
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@@ -6,28 +6,26 @@
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* @date 2019-07-20
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*/
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#include<iostream>
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#include <iostream>
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using namespace std;
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/**
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* @brief 定义了一个变量pFun,这个变量是个指针,指向返回值为空和参数为int的函数的指针!
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* @brief
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* 定义了一个变量pFun,这个变量是个指针,指向返回值为空和参数为int的函数的指针!
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*/
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void (*pFun)(int);
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void (*pFun)(int);
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/**
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* @brief 代表一种新类型,不是变量!所以与上述的pFun不一样!
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*/
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typedef void (*func)(void);
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typedef void (*func)(void);
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void myfunc(void)
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{
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cout<<"asda"<<endl;
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}
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void myfunc(void) { cout << "asda" << endl; }
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void glFun(int a){ cout<<a<<endl;}
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int main(){
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func pfun = myfunc;/*赋值*/
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pfun();/*调用*/
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pFun = glFun;
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(*pFun)(2);
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void glFun(int a) { cout << a << endl; }
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int main() {
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func pfun = myfunc; /*赋值*/
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pfun(); /*调用*/
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pFun = glFun;
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(*pFun)(2);
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}
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