C++ program of Computer science of class 12.previous year of Ahsec Q.

Question

Observe the following C++ code and write the name(s) and Of the header file(s) which will be essantially required to run it in a C++ compiler-

Void main()

{

Char text[30],C;

Cin>>text;

C=tolower(text[1]);

Cout<<C<<"is the second char of"<<text<<endl;