Compilare: user.cpp: In function ‘int lgpow(int, int)’: user.cpp:25:9: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] if(e&1==0){ ^ user.cpp: In function ‘int main()’: user.cpp:64:9: warning: variable ‘s’ set but not used [-Wunused-but-set-variable] int s; ^ user.cpp:60:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ssnd.in", "r", stdin); ^ user.cpp:61:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ssnd.out", "w", stdout); ^ user.cpp:62:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&t); ^ user.cpp:67:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^