Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:8:1: error: expected ‘;’ before ‘while’ while(b) {r=a%b; a=b; b=r;} ^ user.cpp:9:7: error: expected primary-expression before ‘)’ token if(a==)a=0 ^ user.cpp:10:5: error: expected ‘;’ before ‘g’ g<<a; g.close(); return o; ^ user.cpp:10:29: error: ‘o’ was not declared in this scope g<<a; g.close(); return o; ^