Compilare: user.cpp: In function ‘int chestie(int, int, int, int)’: user.cpp:15:15: warning: left operand of comma operator has no effect [-Wunused-value] for(tt=ss;tt<=ss+(x2-x1+1)*(x2-x1+1)-1,ss+(x2-x1+1)*(x2-x1+1)-1<=1000001;tt++) if(v[tt]!=v[ss]) {ok=1;break;} ^ user.cpp:38:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:42:18: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%c",&x); ^ user.cpp:55:18: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%c",&x); ^