Compilare: main.cpp: In function 'int main()': main.cpp:18:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf ( fin, "%d ", &n ); ^ main.cpp:41:13: warning: 'res' may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf ( fout, "%d", res + sp / 2 ); ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:41:36: warning: 'sp' may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf ( fout, "%d", res + sp / 2 ); ~~~^~~