Compilare: user.cpp: In function ‘int main()’: user.cpp:88: warning: unused variable ‘solutie’ user.cpp:47: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:48: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:50: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result user.cpp: In function ‘int op(char)’: user.cpp:24: warning: control reaches end of non-void function user.cpp: In function ‘int operatie(int, int, char)’: user.cpp:43: warning: control reaches end of non-void function /tmp/ccDMwixn.o: In function `main': user.cpp:(.text+0x3b3): warning: the `gets' function is dangerous and should not be used.