Eroare de compilare: main.cpp: In function 'int main()': main.cpp:18:9: error: 'ok' was not declared in this scope ok=1; ^~ main.cpp:20:9: error: 'l' was not declared in this scope l=k*(k+1)/2; ^ main.cpp: At global scope: main.cpp:39:1: error: expected unqualified-id before 'return' return 0; ^~~~~~ main.cpp:40:1: error: expected declaration before '}' token } ^ Non zero exit status: 1