fractie.cpp: In function 'int main()': fractie.cpp:26: warning: array subscript has type 'char' fractie.cpp:15: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result fractie.cpp:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result fractie.cpp:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result fractie.cpp:20: warning: ignoring return value of 'char* gets(char*)', declared with attribute warn_unused_result /tmp/cc5Zv4x7.o: In function `main': fractie.cpp:(.text+0x6a): warning: the `gets' function is dangerous and should not be used.