Compilare: user.cpp:1:9: warning: #pragma once in main file [enabled by default] #pragma once ^ user.cpp: In function ‘int main()’: user.cpp:69:7: warning: unused variable ‘e’ [-Wunused-variable] int e = 0; ^ user.cpp:25:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("minlcm.in", "r", stdin); ^ user.cpp:26:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("minlcm.out", "w", stdout); ^ user.cpp:27:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &test); ^ user.cpp:63:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:66:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &a[i]); ^ user.cpp:97:48: warning: ‘x2’ may be used uninitialized in this function [-Wmaybe-uninitialized] printf("%lld", x1*x2 / (long long )gcd(x1, x2)); ^ user.cpp:97:48: warning: ‘x1’ may be used uninitialized in this function [-Wmaybe-uninitialized]