trei.cpp: In function 'int main()': trei.cpp:37: warning: suggest parentheses around '&&' within '||' trei.cpp:37: warning: suggest parentheses around '&&' within '||' trei.cpp:42: warning: suggest parentheses around '&&' within '||' trei.cpp:42: warning: suggest parentheses around '&&' within '||' trei.cpp:52: warning: suggest parentheses around '&&' within '||' trei.cpp:52: warning: suggest parentheses around '&&' within '||' trei.cpp:57: warning: suggest parentheses around '&&' within '||' trei.cpp:57: warning: suggest parentheses around '&&' within '||' trei.cpp:8: warning: unused variable 'x' trei.cpp:8: warning: 'r' may be used uninitialized in this function