Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:17:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<=strlen(sir.c_str())-1;i++) ^ user.cpp:18:43: error: invalid conversion from ‘const char*’ to ‘char*’ [-fpermissive] { cautare=strchr(spatiu.c_str(),sir[i]); ^ user.cpp:19:46: error: invalid conversion from ‘const char*’ to ‘char*’ [-fpermissive] cautare2=strchr(spatiu.c_str(),sir[i+1]); ^