Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:146: error: ‘abs’ was not declared in this scope user.cpp:150: error: ‘sqrt’ was not declared in this scope user.cpp:170: error: ‘fabs’ was not declared in this scope user.cpp:170: error: ‘pow’ was not declared in this scope user.cpp:187: error: ‘fabs’ was not declared in this scope user.cpp:188: error: ‘pow’ was not declared in this scope user.cpp:204: error: ‘fabs’ was not declared in this scope user.cpp:204: error: ‘pow’ was not declared in this scope user.cpp:220: error: ‘fabs’ was not declared in this scope user.cpp:220: error: ‘pow’ was not declared in this scope user.cpp:236: error: ‘fabs’ was not declared in this scope user.cpp:236: error: ‘pow’ was not declared in this scope user.cpp:252: error: ‘fabs’ was not declared in this scope user.cpp:252: error: ‘pow’ was not declared in this scope user.cpp:268: error: ‘fabs’ was not declared in this scope user.cpp:268: error: ‘pow’ was not declared in this scope user.cpp:284: error: ‘fabs’ was not declared in this scope user.cpp:284: error: ‘pow’ was not declared in this scope user.cpp:91: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:92: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:94: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:96: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:98: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:100: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:102: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:105: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result