Compilare: main.cpp: In function 'void citire()': main.cpp:48:13: warning: unused variable 'a' [-Wunused-variable] 48 | int a,b,c,d; | ^ main.cpp:48:15: warning: unused variable 'b' [-Wunused-variable] 48 | int a,b,c,d; | ^ main.cpp:48:17: warning: unused variable 'c' [-Wunused-variable] 48 | int a,b,c,d; | ^ main.cpp:48:19: warning: unused variable 'd' [-Wunused-variable] 48 | int a,b,c,d; | ^