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C语言函数指针与回调函数使用方法
阅读量:204 次
发布时间:2019-02-28

本文共 1029 字,大约阅读时间需要 3 分钟。

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int (*p_sum)(int x, int y);

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    int sum(int x, int y) {    return x + y;}int (*p_sum)(int x, int y) = sum;printf("?????????%d", p_sum(1, 2));

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    void (*p_function)(????)

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    void sayHello() {    printf("HELLO");}void (*p_sayHello)() = sayHello;p_sayHello();

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    #include 
    void sum(int x, int y, void(*p_callback)(int)) { int r = x + y; p_callback(r);}void callBack(int r) { printf("?????%d\n", r);}int main() { sum(1, 2, callBack); return 0;}

    ???????sum??????????????????????????????????????callBack???????

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