Compilare: main.cpp: In function 'int main()': main.cpp:45:50: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ( "kbubblesort.out" , "w" , stdout ) ; ^ main.cpp: In function 'int getch(FILE*)': main.cpp:16:62: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread ( buffer + 1 , 1 , BUFFER_SIZE , f ) , poz = 0 ; ^