Compilare: user.cpp: In function ‘void Citire()’: user.cpp:13:23: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[1601]’ [-Wformat=] fscanf(f, "%s", &s); ^ user.cpp: In function ‘void Calc()’: user.cpp:20:17: warning: NULL used in arithmetic [-Wpointer-arith] while(s[0]!=NULL) ^ user.cpp:29:24: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] st[top][lf]=NULL; ^ user.cpp:31:40: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] st[top][0]='\\'; st[top][1]=NULL; //strcpy(st[top], "\"); ^ user.cpp:53:28: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] sir[ls]=NULL; ^ user.cpp:69:28: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] sir[ls]=NULL; ^