Chapter 4, Problem 4.11E

(Correct the Code Errors) Identity and correct the errors (s) in each of the following:

1. if (age >= 65); {
cout << “Age is greater than or equal to 65” << end1;
}
else {
cout << “Age is less than 65 << and end1” ;
}

2. if (age >= 65) {
cout << “Age is greater than or equal to 65” << end1;
else: {
cout << “Age is less than 65<< end1”;
}

3. unsigned int x {1};
unsigned int total;
while (x <=10) {
total += x;
++x;
}

4. While (x <=100)
total +=x;
++x;

5. while (y>0) {
cout << y << end1;
++y;
}

To determine

a)

To find and correct errors in the given program segment.

Explanation of Solution

The given program segment contains errors in the following highlighted statements:

if(age>=65); {
cout<<"Age is greater than are equal to 65"<<endl;
}
else {
cout<<"Age is less than 65<<endl";
}       

Errors:

• If the statement is ending with a semi-colon.
• The keyword endl is enclosed within double-quotes. Double quotes should only contain string statements.

Correct code:

if(age>=65){
cout<<"Age is greater than are equal to 65"<<endl;
}
else {
cout<<"Age is less than 65"<<endl;
}       

To determine

b)

To find and correct errors in the given program segment.

Explanation of Solution

The given program segment contains errors in the following highlighted statements:

if(age>=65){
cout<<"Age is greater than are equal to 65"<<endl;
}
else; {
cout<<"Age is less than 65 <<endl";
}       

Errors:

• Else statement is ending with a semi-colon.
• The keyword endl is enclosed within double-quotes. Double quotes should only contain string statements.

Correct code:

if(age>=65){
cout<<"Age is greater than are equal to 65"<<endl;
}
else {
cout<<"Age is less than 65"<<endl;
}       

To determine

c)

To find and correct errors in the given program segment.

Explanation of Solution

The given program segment contains errors in the following highlighted statements:

unsigned int x{1};
unsigned int total;
while(x<=10){
	total + = x;
	++x;
}

Errors:

• Incorrect use of assignment operator (=).

Correct code:

unsigned int x{1};
unsigned int total;
while(x<=10){
	total =+ x;
	++x;
}

To determine

d)

To find and correct errors in the given program segment.

Explanation of Solution

The given program segment contains errors in the following highlighted statements:

if(age>=65); {
cout<<"Age is greater than are equal to 65"<<endl;
}
else {
cout<<"Age is less than 65<<endl";
}       

Errors:

• If the statement is ending with a semi-colon.
• The keyword endl is enclosed within double-quotes. Double quotes should only contain string statements.

Correct code:

if(age>=65){
cout<<"Age is greater than are equal to 65"<<endl;
}
else {
cout<<"Age is less than 65"<<endl;
}       

To determine

e)

To find and correct errors in the given program segment.

Explanation of Solution

The given program segment contains errors in the following highlighted statements:

while(y>0){
	cout<<y<<endl;
	++y;
}

Errors:

• The code segment contains a logical error. The while loop is an infinite loop since it will keep running since y is always incremented and will always remain positive.

Correct code:

while(y>0){
	cout<<y<<endl;
	--y;
}