tgraf.cpp: In function 'int main()': tgraf.cpp:46: warning: format '%ld' expects type 'long int', but argument 2 has type 'int' tgraf.cpp:47: warning: format '%ld' expects type 'long int', but argument 2 has type 'int' tgraf.cpp:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result tgraf.cpp:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result tgraf.cpp:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result tgraf.cpp:37: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result tgraf.cpp:40: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result