pixy.cpp: In function 'void bfs(int)': pixy.cpp:28: warning: comparison between signed and unsigned integer expressions pixy.cpp: In function 'int main()': pixy.cpp:43: warning: format '%c' expects type 'char*', but argument 4 has type 'int*' pixy.cpp:48: warning: format '%c' expects type 'char*', but argument 2 has type 'int*' pixy.cpp:51: warning: format '%c' expects type 'char*', but argument 2 has type 'int*' pixy.cpp:41: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result pixy.cpp:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result pixy.cpp:43: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result pixy.cpp:48: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result pixy.cpp:51: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result