Chapter 21, Problem 21.6E

(Write C++ Statements) Write a statement for each of the following:

1. Print integer 40000 left justified in a 15-digit field.
2. Read a string into character array variable state.
3. Print 200 with and without a sign.
4. Print the decimal value 100 in hexadecimal form preceded by 0x.
5. Read characters into array charArray until the character ‘p’ is encountered, up to a limit of 10 characters (including the terminating null character). Extract the delimiter from the input stream, and discard it.
6. Print 1.234 in a 9-digit field with preceding zeros.

Program Plan Intro

To print integer 4000 left justified in a 15-digit field.

Explanation of Solution

The function setw() is used in C++ to adjust the field width for output.

intleftalign=4000;

cout<<setw(15)<<leftalign;

Program Plan Intro

To read a string into character array variable state.

Explanation of Solution

Following statement will read as string into character array variable state.

cin>>state;

Program Plan Intro

To print 200 with and without a sign.

Explanation of Solution

Following statement will print the number 200 with sign

cout<< “+200”;

Following statement will print the number 200 without sign

cout<< “200”;

Program Plan Intro

To print the decimal value 100 in hexadecimal form preceded by 0x.

Explanation of Solution

Following set of statement will print the decimal value 100 as specified.

cout<<”Print the value decimal value 100 in hexadecimal format”;

inttoHex = 100;

cout<<”The decimal number 100 converted to hexadecimal =”;

Program Plan Intro

To read the characters into array charArray until the character ‘p’ is encountered, upto a limit of 10 characters (including the terminating null character). To extract the delimiter from the input stream and discard it.

Explanation of Solution

char array[10];
for( int i=0;i<10; i++)
{
	if(array[i]!=‘p’)
	{
cout<<array[i];
}
else break;
}
array[--i] = “”;

Program Plan Intro

To print 1.234 in a 9-digit field with preceding zeros.

Explanation of Solution

Following statement will print 1.234 with 9 digit field with preceding zeros.

cout<<setfill('0')<<setw(9)<<1.234;