Compilare: user.cpp: In function ‘int main()’: user.cpp:16:9: warning: unused variable ‘p1’ [-Wunused-variable] int p1 = 1, p11 = ap[1], p2 = ap[1] + 1, p22 = p11 + ap[2], p3 = p22 + 1, p33 = p3 + ap[3] - 1; ^ user.cpp:17:29: warning: unused variable ‘lastt’ [-Wunused-variable] int last = 0, prim = 0, lastt = 0; ^ user.cpp:7:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("egipt.in", "r",stdin); ^ user.cpp:8:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("egipt.out", "w",stdout); ^ user.cpp:10:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n", &n); ^ user.cpp:13:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &a[i]); ^