Eroare de compilare: user.cpp: In function 'int main()': user.cpp:51: warning: comparison between signed and unsigned integer expressions user.cpp:73: error: 'k' was not declared in this scope user.cpp:74: error: expected `;' before '}' token user.cpp:74: error: expected primary-expression before '}' token user.cpp:74: error: expected `;' before '}' token user.cpp:74: error: expected primary-expression before '}' token user.cpp:74: error: expected `)' before '}' token user.cpp:74: error: expected primary-expression before '}' token user.cpp:74: error: expected `;' before '}' token