10.1

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10.2

Will the statement cout.setf(ios::right) work or not?

Answer

cout.setf(ios :: right) will not work because width() function was not invoked before cout.setf(ios :: right)

10.3

State errors, if any, in the following statements.

  • (a) cout << (void*) amount;
  • (b) cout << put (“John”) ;
  • (c) cout << width();
  • (d) int p = cout.width(10);
  • (e) cout.width(10).precision(3);
  • (f) cout.setf(ios::scientific,ios::left);
  • (g) ch = cin.get();
  • (h) cin.get().get();
  • (i) cin.get(c).get();
  • (j) cout << setw(5) << setprecision(2);
  • (k) cout << resetiosflags(ios::left lios::showpos);
Answer
  • (a) missing
  • (b) put ( ) a member function of ostream class. It is used to output a character. Hence it does not return any value; so cout<<(“John”); is not valid. Correction :
    cout.put (‘John’);
  • (c) width ( ) function does not return any value. So cout <Correction : cout.width ( );
  • (e) cout.width (10) precision (3); must be written separately
    cout.width (10);
    cout.preasion (3);
  • (f) If you want to see output as scientfic format you can acheive this as follow:
    cout.setf (ios :: scientific, ios :: floatfield);   If you want to see output at left field you can achieve this as flows: cout.setf (ios :: left, ios :: adjustfield);
  • (g) No error
  • (h) cannot be concatenated;

Correction :
cin.get ( )
cin.get ( )

  • (i) No error
  • (j) No error
  • (k) No error

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