[SOLVED] COMP2113- Module 6

Description

 

1. Write a single statement to accomplish each of following tasks:
   • Use a stream manipulator to ensure that floating-point values print in scientific notation for when using cout​ ​.
   • Use a stream manipulator to set the fill character to ‘*’​ ​ for printing in field widths larger than the values being output using cout​   ​.
   • Print 6789​ ​ right justified in an 8-digit field.

 

2. Write a C++ statement that uses the manipulator setfill​ ​ to output a line containing 40

pound signs, i.e., “########################################​ ​”.

 

3. Identify error(s), if any, in the following array declarations. If a statement is incorrect, provide the correct statement.
   • double weights[100];
   • int age[0..80];
   • int100 list[];
   • double[50] salaries;

 

4. Correct the following code so that it correctly sets the value of each element of myList​ ​ to the index of the element.

 

int myList[10];

for (int i = 1; i <= 10; i–) myList[i] = [i];

 

5. What is stored in list​ ​ after the following C++ code executes?

 

int list[10];

list[0] = 2; list[1] = 3;

for (int i = 2; i < 10; i++)

{ list[i] = list[i – 1] + list[i – 2];  if (i > 7) list[i] = 2 * list[i] – list[i – 2];

}

6. Determine whether the following array declarations are valid. If a declaration is valid, determine the size of the array.
   • int list[] = {18, 13, 14, 16};
   • int x[10] = {1,7,5,3,2,8};
   • double y[4] = { 2.0, 5.0, 8.0, 11.0, 14.0} ;
   • int list[7] = {12, 13, , 14, 16, , 8};

 

7. Write a single statement for each of the following one-dimensional array operations:
   • Initialize the 10 elements of integer array counts​ ​ to zero.
   • Add 1 to each of the 15 elements of the integer array bonus​ ​.
   • Read 12 values for double​ ​ array scores​  ​ from the keyboard.

 

 

Self-Review Exercise                                                                     Module 6                                                                                                 p. 1/2

 

8. Write a code segment that finds the minimum and maximum values contained in a

99-element double​ ​ array w​ ​.

 

9. Write a code segment that finds the minimum and maximum values contained in a 4-by-6 int​ array t​ ​. (The declaration for t​ ​ is int t[4][6];​   ​)

 

10.Consider the following C++ code:

 

string str1; string str2; char ch; int index; cin >> str1; cin >> str2; cin >> index; ch = str1[index]; str1[index] = str2[index]; str2[index] = ch;

cout << str1 << ” ” << str2 << endl;

 

Answer the following questions:

• What is the output if the input is Hello There 2​ ​?
• What is the output if the input is Diamond Gold 0​ ​?
• What is the output if the input is C++ Java 1​ ​?

 

11.What is the output of the following C++ code?

 

string str1 = “Trip to Hawaii”; string str2 = “Summer or Fall”; string newStr;

newStr = str2 + ‘ ‘ + str1;

cout << newStr << endl;

cout << str1 + ” in ” + str2 << endl; cout << newStr.length() << endl; cout << str1.find(‘H’) << endl; cout << str2.find(“or”) << endl; cout << newStr.substr(10, 19) << endl;

cout << newStr.replace(23, 6, “******”) << endl;

string str = “C++ Programming”; cout << str << endl;

cout << str.length() << endl;

str[0] = ‘J’;

str[2] = ‘$’;

 

cout << str << endl;

 

12.Find the error(s) in each of the following, and explain how to correct it (them):

• string string1( 28 ); // construct string1
• string string2( ‘z’ ); // construct string2

 

Self-Review Exercise                                                                     Module 6                                                                                                 p. 2/2