Compilare: user.cpp: In function ‘int main()’: user.cpp:14:20: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] if(B&(1<<i)>0){ ^ 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("modulo.in", "r", stdin); ^ user.cpp:9:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("modulo.out", "w", stdout); ^ user.cpp:10:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%ld %ld %d",&A,&B,&C); ^