Compilare: main.cpp: In function 'int main()': main.cpp:19:18: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long int*' [-Wformat=] scanf("%d",&n); ^ main.cpp:21:28: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long int*' [-Wformat=] scanf("%d %d",&a,&b); ^ main.cpp:21:28: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'long int*' [-Wformat=] main.cpp:22:31: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long int' [-Wformat=] printf("%d\n",gcd(a,b)); ^ main.cpp:18:18: warning: unused variable 'c' [-Wunused-variable] long n,a,b,i,c; ^ main.cpp:16:38: 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:17:40: 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:19:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ main.cpp:21:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&a,&b); ^