Compilare: user.cpp: In function ‘int este(int, int)’: user.cpp:8:19: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] if(i & (1<<j) !=0) return 1; ^ user.cpp: In function ‘int main()’: user.cpp:16:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n, &m); ^ user.cpp:25:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d", &x, &y, &z); ^