Compilare: main.cpp: In function 'int32_t main()': main.cpp:29:23: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'int' [-Wformat=] scanf("%d %d",&a,b); ^ main.cpp:23:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("euclid2.in","r",stdin); ^ main.cpp:24:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("euclid2.out","w",stdout); ^ main.cpp:29:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&a,b); ^