Write a C++ statement or a set of C++ statements to accomplish each of the following:

Question

a) Sum the odd integers between 1 and 99 using a for statement. Assume the integer variables sum and count have been declared.
b) Print the value 333.546372 in a 15-character field with precisions of 1, 2 and 3. Print each number on the same line. Left-justify each number in its field. What three values print?
c) Calculate the value of 2.5 raised to the power 3 using function pow. Print the result with a precision of 2 in a field width of 10 positions. What prints?
d) Print the integers from 1 to 20 using a while loop and the counter variable x. Assume that the variable x has been declared, but not initialized. Print only 5 integers per line. [Hint: When x % 5 is 0, print a newline character; otherwise, print a tab character.]
e) Repeat Exercise 4.2(d) using a for statement.

Answer 1

a) ```
sum = 0;
for ( count = 1; count <= 99; count += 2 )
sum += count;
```
b)
```
cout << fixed << left
<< setprecision( 1 ) << setw( 15 ) << 333.546372
<< setprecision( 2 ) << setw( 15 ) << 333.546372
<< setprecision( 3 ) << setw( 15 ) << 333.546372
<< endl;
Output is:
333.5 333.55 333.546
```
c) ```
cout << fixed << setprecision( 2 )
<< setw( 10 ) << pow( 2.5, 3 )
<< endl;
Output is:
15.63
```
d) ```
x = 1;
while ( x <= 20 )
{
if ( x % 5 == 0 )
cout << x << endl;
else
cout << x << '\t';
x++;
}
```
e) ```
for ( x = 1; x <= 20; x++ )
{
if ( x % 5 == 0 )
cout << x << endl;
else
cout << x << '\t';
}
```