Compilare: user.cpp: In function ‘int main()’: user.cpp:13:22: warning: unused variable ‘d2’ [-Wunused-variable] int j, jum, num, d2, d3, d5; ^ user.cpp:13:26: warning: unused variable ‘d3’ [-Wunused-variable] int j, jum, num, d2, d3, d5; ^ user.cpp:13:30: warning: unused variable ‘d5’ [-Wunused-variable] int j, jum, num, d2, d3, d5; ^ user.cpp:11:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pascal.in", "r", stdin); ^ user.cpp:12:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pascal.out", "w", stdout); ^ user.cpp:15:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &r, &d); ^