Compilare: main.cpp: In function 'void getprime(int)': main.cpp:16:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 2 ; i <= MAX && prime.size() < m ; i ++) ~~~~~~~~~~~~~^~~ main.cpp: In function 'int main()': main.cpp:33:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(s.size() > m) ~~~~~~~~~^~~ main.cpp:53:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(s.size() > m) ~~~~~~~~~^~~ main.cpp:24:21: warning: unused variable 'j' [-Wunused-variable] int n , m , i , j , ok; ^ main.cpp:22:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("numar2.in" , "r" , stdin); ^ main.cpp:23:41: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("numar2.out" , "w" , stdout); ^ main.cpp:27:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d" , &n , &m); ^ main.cpp:30:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d" , &v[i]); ^