adun.cpp: In function 'int main()': adun.cpp:9: warning: format '%s' expects type 'char*', but argument 2 has type 'char (*)[300]' adun.cpp:6: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result adun.cpp:7: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result