java转c++

C/C++ code:


#include "stdafx.h"
#include <iostream>
#include "string"
#include <cstring>
using namespace std;
char * extension(char *c,int len,int dataLen);
char * copyArrayToChar(char *c,int len);
char * getLine();
int main(){
char *p=getLine();
char t;
int i=1;
while(i){
t=*(p+i-1);
if(t=='\n'){
break;
}
i++;
cout<<t;
}
delete[]p;
return 0;
}
char* getLine(){
int len=2;
int size=0;
char *c=new char[len];
char *t;
while(1){
if(size/len>0.75){
cout<<"扩展\n";
t=extension(c,len,size);
len*=2;
delete[]c;
c=t;
t=NULL;
}
c[size]=cin.get();
size++;
if(c[size-1]=='\n'){
break;
}
}
t=copyArrayToChar(c,size);
delete[]c;
return t;
}
/**
传入一个字符指针和长度，生成一个两倍长的字符数组指针,
**/
char * extension(char *c,int len,int dataLen){
char * t=new char[len*2];
for(int i=0;i<dataLen;i++){
*(t+i)=*(c+i);
}
return t;;
}
/**
传入一个字符指针和长度， 复制一分长度刚好的char数组出来
**/
char * copyArrayToChar(char *c,int len){
char * t=new char[len];
for(int i=0;i