C语言函数参数ParamType param与ParamType &param的区别
#include<stdio.h>#include<stdlib.h>void test1(int a){printf("test1 method address:%d\n",&a);printf("test1 method %d\n",a);a = 2;}void test2(int& a){printf("test2 method address:%d\n",&a);printf("test2 method %d\n",a);a = 2;}void test3(int* &p){printf("method test3 a's address:%d\n",&p);}void test4(int* p){printf("method test4 a's address:%d\n",&p);}int main(){int a = 1;printf("main method a's address:%d\n",&a);test1(a);printf("after method test1 a = %d\n",a);test2(a);printf("after method test2 a = %d\n",a);int* pa = &a;printf("main method pa's address:%d\n",&pa);test3(pa);test4(pa);return 0;}

?