Compilare: user.cpp: In function ‘bool valid(int, int, int)’: user.cpp:130:21: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] return (c1 & c2 == 0) && (c1 | c2 == (1 << s) - 1); ^ user.cpp:130:39: warning: suggest parentheses around comparison in operand of ‘|’ [-Wparentheses] return (c1 & c2 == 0) && (c1 | c2 == (1 << s) - 1); ^ user.cpp: In function ‘int main()’: user.cpp:39:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &p); ^ user.cpp:40:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d", &n, &m, &t); ^ user.cpp:41:50: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d%d", &xi, &yi, &micro, &s); ^ user.cpp:46:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &x, &y); ^ user.cpp:52:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &cd); ^