動態內存指針

-4

int main(int argc, char **argv) { 
    float *rainfall; 
    float rain_today; 
    // rainfall has been dynamically allocated space for a floating point number. 
    // Both rainfall and rain_today have been initialized in hidden code. 
    // Assign the amount in rain_today to the space rainfall points to. 

    return 0; 
}

大家好。這是一個非常基本的問題，但我還沒有找到解決方案。是不是隻是動態內存指針

rain_today = *rainfall

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2017-06-03 And

如果有的話是相反的。 – kaylum

rain_today = *rainfall;號將採取由rainfall指出的值，並把它放在rain_today（理想NULL）。

你被要求做的是把的rain_today值到由指針rainfall

指向的空間是：

*rainfall = rain_today \\the value of rain_toady is COPIED to the space pointed by rainfall

或者你可以這樣做：

rainfall = &rain_today \\rainfall points at the memory location of rain_today

來源

2017-06-03 01:48:25 Makogan

動態內存指針

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