limbaj.cpp: In function 'void tolwer(char*)': limbaj.cpp:10: warning: comparison between signed and unsigned integer expressions limbaj.cpp: In function 'int main()': limbaj.cpp:15: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result limbaj.cpp:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result limbaj.cpp:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result limbaj.cpp:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result limbaj.cpp:28: warning: ignoring return value of 'char* gets(char*)', declared with attribute warn_unused_result limbaj.cpp:30: warning: ignoring return value of 'char* gets(char*)', declared with attribute warn_unused_result limbaj.cpp:42: warning: ignoring return value of 'char* gets(char*)', declared with attribute warn_unused_result limbaj.cpp:54: warning: ignoring return value of 'char* gets(char*)', declared with attribute warn_unused_result limbaj.cpp:67: warning: ignoring return value of 'char* gets(char*)', declared with attribute warn_unused_result limbaj.cpp:79: warning: ignoring return value of 'char* gets(char*)', declared with attribute warn_unused_result /tmp/ccOJkNJ9.o: In function `main': limbaj.cpp:(.text+0xd0): warning: the `gets' function is dangerous and should not be used.