Replace specific character in a string in C++ -

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i have code following - 

value = "current &ht"; //this value void stringset(const char * value) {     const char *chk = null;      chk = strpbrk(value,"&");   if(chk != null)   {         strncpy(const_cast<char *> (chk),"&amp",4)   } }

in above code replace "&" value "&amp.it works fine if have "&" single character in current case strpbrk() return "&ht"and in below strncpy whole "&ht"is replaced.

now know methods can replace single character string.

i think need temp array hold string past & , replace & in original string , append temp array original. here above code modified, believe can use strstr instead of strchr accepts char* second argument.

void stringset(char * value) {     char *chk = null,*ptr = null;     chk = strchr(value,'&');   if(chk != null)   {     ptr = chk + 1;     char* p = (char*)malloc(sizeof(char) * strlen(ptr));     strcpy(p,ptr);     value[chk-value] = '\0';     strcat(value,"&amp");     strcat(value,p);     free(p);   } }

thanks niraj rathi


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