izvor.cpp:5: error: declaration does not declare anything izvor.cpp: In function 'int sol(int)': izvor.cpp:12: error: 'n' was not declared in this scope izvor.cpp: In function 'int succesor(int)': izvor.cpp:18: error: 'x' was not declared in this scope izvor.cpp:18: error: 'n' was not declared in this scope izvor.cpp: In function 'void afis(int)': izvor.cpp:30: error: 'x' was not declared in this scope izvor.cpp:31: error: 'a' was not declared in this scope izvor.cpp:27: warning: unused variable 's2' izvor.cpp: In function 'void back()': izvor.cpp:39: error: 'x' was not declared in this scope izvor.cpp:54: error: expected ';' before '}' token