Compilare: user.cpp: In function ‘int main()’: user.cpp:85:35: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread( &header, 14, 1, input ); ^ user.cpp:86:39: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread( &infoheader, 40, 1, input ); ^ user.cpp:93:61: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf( input, "%c %c %c", &blue, &green, &red ); ^