#include #include bool insert( char*s1,char*s2,unsigned a) { char *p1 = s1,*p2 = s2; char temp[128]={}; int _size = strlen(s1)-a; memcpy( temp,p1+a,_size ); memcpy( p1+a,s2,strlen(s2)); memcpy( p1+a+strlen(s2),temp,_size ); *(p1+a+strlen(s2)+_size+1) = &