Rezumat problemă

Logaritm

C++

#3973

Dându-se un număr real x, să se scrie un program care calculează \(ln(x)\) cu 6 zecimale exacte.

Subiecte Atestat Informatica - Vâlcea

Consola Dumitrescu Ovidiu Mihail (dovidiu) Bucă Mihnea-Vicențiu, Ovidiu Mihail Dumitrescu medie

Clasa 10 Divide et Impera Probleme diverse Formula

Rezolvă

Detalii

Problema	Logaritm	Operații I/O	tastatură/ecran
Limita timp	0.01 secunde	Limita memorie	Total: 4 MB / Stivă 2 MB
Id soluție	#62835453	Utilizator	Osan Emanuel (EmanuelOsn)
Fișier	logaritm.cpp	Dimensiune	469 B
Data încărcării	03 Februarie 2026, 19:02	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

logaritm.cpp: In function 'long double ll(long double, long double, long double)':
logaritm.cpp:9:16: error: call of overloaded 'abs(long double)' is ambiguous
     if(abs(pm-x)<err) return m;

                ^
logaritm.cpp:9:16: note: candidates are:
In file included from /usr/include/c++/4.8/cstdlib:72:0,
                 from /usr/include/c++/4.8/ext/string_conversions.h:41,
                 from /usr/include/c++/4.8/bits/basic_string.h:2815,
                 from /usr/include/c++/4.8/string:52,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from logaritm.cpp:1:
/usr/include/stdlib.h:775:12: note: int abs(int)
 extern int abs (int __x) __THROW __attribute__ ((__const__)) __wur;
            ^
In file included from /usr/include/c++/4.8/ext/string_conversions.h:41:0,
                 from /usr/include/c++/4.8/bits/basic_string.h:2815,
                 from /usr/include/c++/4.8/string:52,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from logaritm.cpp:1:
/usr/include/c++/4.8/cstdlib:174:3: note: long long int std::abs(long long int)
   abs(long long __x) { return __builtin_llabs (__x); }
   ^
/usr/include/c++/4.8/cstdlib:166:3: note: long int std::abs(long int)
   abs(long __i) { return __builtin_labs(__i); }
   ^
logaritm.cpp:8:39: warning: unused variable 'ps' [-Wunused-variable]
     long double m=(s+d)/2,pm=pow(e,m),ps=pow(e,s),pd=pow(e,d);

                                       ^
logaritm.cpp:8:51: warning: unused variable 'pd' [-Wunused-variable]
     long double m=(s+d)/2,pm=pow(e,m),ps=pow(e,s),pd=pow(e,d);

                                                   ^
logaritm.cpp: In function 'int main()':
logaritm.cpp:16:19: warning: unused variable 'y' [-Wunused-variable]
     long double x,y=pow(e,22);

                   ^
logaritm.cpp:17:9: warning: unused variable 'i' [-Wunused-variable]
     int i;

         ^

Cum funcționează evaluarea?