Compilare: main.cpp: In function 'int main()': main.cpp:20:19: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long unsigned int*' [-Wformat=] scanf("%d", &n); ^ main.cpp:23:30: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long unsigned int*' [-Wformat=] scanf("%d %d", &a, &b); ^ main.cpp:23:30: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'long long unsigned int*' [-Wformat=] main.cpp:25:34: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long unsigned int' [-Wformat=] printf("%d\n", cmmdc(a,b)); ^ main.cpp:18:38: 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:19:40: 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:20:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:23:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &a, &b); ^