Eroare de compilare: user.c: In function ‘R’: user.c:3:1: warning: implicit declaration of function ‘ret’ [-Wimplicit-function-declaration] int R(int n,int x) { return x==1?(n-1):(!x?1000001:(n/x+ret(x,n%x))); } ^ user.c: In function ‘main’: user.c:5:9: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("transformari.in","r",stdin),freopen("transformari.out","w",stdout),scanf("%d",&n); ^ user.c:5:46: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("transformari.in","r",stdin),freopen("transformari.out","w",stdout),scanf("%d",&n); ^ user.c:5:83: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] freopen("transformari.in","r",stdin),freopen("transformari.out","w",stdout),scanf("%d",&n); ^ /tmp/cc1UD1sv.o: In function `R': user.c:(.text+0x31): undefined reference to `ret' collect2: error: ld returned 1 exit status