What is the error?
Since 5/9 !=0.55 exactly hence use this
int cel = (i-32)*(5.0/9);
Otherwise might give WA for some cases
If your doubt is resolved then please mark it as resolved 
Since 5/9 !=0.55 exactly hence use this
int cel = (i-32)*(5.0/9);
Otherwise might give WA for some cases
If your doubt is resolved then please mark it as resolved