Compilare: user.cpp: In function ‘int main()’: user.cpp:23:9: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(m+j<=e) ^ user.cpp:9:81: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("loto.in","r",stdin),freopen("loto.out","w",stdout),scanf("%d%d",&n,&s); ^ user.cpp:9:81: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:9:81: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:11:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&v[i]); ^