Compilare: user.cpp: In function ‘void main2()’: user.cpp:110:19: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] if(rza[i]<rza[i-aux&(-aux)]) ^ user.cpp:111:17: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] rza[i]=rza[i-aux&(-aux)]; ^ user.cpp:113:19: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] if(rzb[i]<rzb[i-aux&(-aux)]) ^ user.cpp:115:17: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] rzb[i]=rzb[i-aux&(-aux)]; ^ user.cpp:42:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d",&n,&m); ^ user.cpp:48:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d",&x,&y); ^ user.cpp: In function ‘int main()’: user.cpp:146:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&t); ^