Compilare: user.cpp: In function ‘int complement()’: user.cpp:35:31: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] if((harta[i][j]^k)&masca==masca) ^ user.cpp: In function ‘int main()’: user.cpp:96:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("panda.in","r",stdin); ^ user.cpp:97:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("panda.out","w",stdout); ^ user.cpp:99:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d",&p,&n,&m,&T); ^ user.cpp:100:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d",&x1,&y1,&k,&S); ^ user.cpp:103:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&a,&b); ^ user.cpp:108:39: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&(harta[i][j])); ^