blockout.cpp: In function 'int main()': blockout.cpp:99: warning: format '%d' expects type 'int*', but argument 2 has type 'short int*' blockout.cpp:115: warning: format '%d' expects type 'int*', but argument 2 has type 'short int*' blockout.cpp:97: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result blockout.cpp:98: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result blockout.cpp:99: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result blockout.cpp:115: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result blockout.cpp:135: warning: 'lastc' may be used uninitialized in this function