Compilare: user.cpp: In function ‘int main()’: user.cpp:21:24: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] if(v[i][a] != 's' & v[i][a] != 'd' && v[i][b] != 's' & v[i][b] != 'd') ^ user.cpp:21:59: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] if(v[i][a] != 's' & v[i][a] != 'd' && v[i][b] != 's' & v[i][b] != 'd') ^ user.cpp:8:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("meciul.in","r",stdin); ^ user.cpp:9:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("meciul.out","w",stdout); ^ user.cpp:14:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&t); ^ user.cpp:17:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:19:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&a,&b); ^