Eroare de compilare: user.cpp: In function ‘int suprapunere(int, int*)’: user.cpp:34: error: ‘powf’ was not declared in this scope user.cpp:35: error: ‘powf’ was not declared in this scope user.cpp:42: error: ‘powf’ was not declared in this scope user.cpp:43: error: ‘powf’ was not declared in this scope user.cpp: In function ‘void back(int*)’: user.cpp:70: error: ‘powf’ was not declared in this scope user.cpp:76: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp: In function ‘int main()’: user.cpp:106: error: ‘CLK_TCK’ was not declared in this scope