Borderou de evaluare (job #786644)

Compilare: main.cpp: In function 'int isprime(int)': main.cpp:15:28: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] 15 | if(n%i==0 || n & (i+2) == 0) return 0; | ~~~~~~^~~~ main.cpp: In function 'int main()': main.cpp:39:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result] 39 | freopen("centruprim.in", "r", stdin); | ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:40:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result] 40 | freopen("centruprim.out", "w", stdout); | ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~