Compilare: user.cpp: In function ‘int r()’: user.cpp:20:7: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(d==1) ^ user.cpp: In function ‘int main()’: user.cpp:35:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(n,"%d%d%d",&k,&x,&y); ^