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                            # 宏函數

~~~
//宏函數,不是一個真正的函數(只是預處理器進行簡單的文本轉換)
#define MYADD(x, y) ((x) + (y))

int main() {
    int a = 10;
    int b = 20;

    //宏函數在一定場景下效率要比函數高
    printf("a + b = %d\n", MYADD(a, b));
    printf("a + b = %d\n", ((a) + (b)));

    getchar();
    return 0;
}
~~~
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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