Alege variabilele corecte:
1)int a, b, c;
2)int a1,a2,a3;
3)int a_1,a_2,b_1;
4)int 1a, 1b, 1c;
5)int 1;
6)int var0b;
Eu cred ca 1,2 sunt corecte,mai sunt si altele?