#include

#include

#include

#include

#include

#include

#include

#include

static char pstring[] = "Hello\n"; // 这里不能是char*

int main()

{

char tmp ;

char* pstr = strchr(pstring,‘l‘);

printf("pstr is %s %p\n",pstr,pstr);

#if 0

// 搜后面的

pstr = strchr(pstr+1,‘l‘); // 是strchr不是strstr

printf("next pastr is %s\n",pstr);

#endif //

//需要He

tmp = *pstr;

printf("%c",tmp);

pstr[0] = ‘\0‘;

printf("length is %d\n",strlen(pstring)+1);

char* data = (char*)malloc(strlen(pstring)+1);

if(data == NULL)

{

printf("malloc failure\n");

return -1;

}

printf("length is %d\n",strlen(pstring)+1);

strcpy(data,pstring);

printf("data is %s\n",data);

*pstr = tmp;

free(data);

while(1);

return 0;

}

原文：https://www.cnblogs.com/nowroot/p/13660647.html