cod1.cpp: In function 'int main()': cod1.cpp:44: warning: array subscript has type 'char' cod1.cpp:45: warning: array subscript has type 'char' cod1.cpp:47: warning: array subscript has type 'char' cod1.cpp:48: warning: array subscript has type 'char' cod1.cpp:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result cod1.cpp:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result cod1.cpp:39: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result cod1.cpp:40: warning: ignoring return value of 'char* gets(char*)', declared with attribute warn_unused_result /tmp/ccCsKecz.o: In function `main': cod1.cpp:(.text+0x21a): warning: the `gets' function is dangerous and should not be used.