#include <iostream>
#include<cstring>
using namespace std;
char* replace(const char* str,const char* sub1,const char* sub2,char* output)
{
char* pOutput=NULL;
const char* pStr=NULL;
int lenSub1 = strlen(sub1);
int lenSub2 = strlen(sub2);
pOutput=output;
pStr=str;
while(*pStr!=0)
{
pStr=strstr(pStr,sub1); //strstr是个好函数啊,要常用啊
if(NULL!=pStr)
{
memcpy(pOutput,str,pStr-str);
pOutput+=pStr-str;
memcpy(pOutput,sub2,lenSub2);
pOutput+=lenSub2;
pStr+=lenSub1;
str=pStr;
}
else break;
}
*pOutput='\0';
if(*str!='\0')
{
strcpy(pOutput,str);
}
return output;
}
int main()
{
char str[50]="";
char sub1[10]="";
char sub2[10]="";
char output[100]="";
cout<<"str:";
cin>>str;
cout<<"sub1:";
cin>>sub1;
cout<<"sub2:";
cin>>sub2;
cout<<replace(str,sub1,sub2,output)<<endl;
return 0;
}
使用C++编写的查找字符子串并替换
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转载自blog.csdn.net/qugename/article/details/8902320
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