Compilare: main.cpp: In function 'void citire()': main.cpp:28:12: warning: variable 'sem' set but not used [-Wunused-but-set-variable] char x,sem; ^~~ main.cpp: In function 'int calculare()': main.cpp:147:13: warning: variable 'c' set but not used [-Wunused-but-set-variable] int x,y,c,nr; ^ main.cpp:147:15: warning: variable 'nr' set but not used [-Wunused-but-set-variable] int x,y,c,nr; ^~