Compilare: user.cpp: In function ‘void prim(int)’: user.cpp:13:14: warning: unused variable ‘nr’ [-Wunused-variable] int i, j,nr=1; ^ user.cpp: In function ‘int main()’: user.cpp:51:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("apm.in", "r", stdin); ^ user.cpp:52:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("apm.out", "w", stdout); ^ user.cpp:53:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf( "%d %d", &n,&m); ^ user.cpp:55:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &i, &j, &k); ^ user.cpp: In function ‘void prim(int)’: user.cpp:42:34: warning: ‘pmin’ may be used uninitialized in this function [-Wmaybe-uninitialized] parinte[i] = pmin; ^