Compiling but no output

[Ashish940 (Ashish Singh)]

code is compiling successfully but no output.
link to code : https://drive.google.com/open?id=1MH6AYZ_zZL7z_zKmcSuU70oe483nfFKz

[yuktimutreja01 (Yukti Mutreja)]

You are using somewhere wrong approach in your pie function. Plz try to modify the code, Use these lines
if(str[0]==‘p’ && str[1]==‘i’)
{
replacepi(str.substr(2),osf+“3.14”);
}
else
{
replacepi(str.substr(1),osf+str[0]);
}