Iostream - Study guides, Class notes & Summaries

#include <iostream> using namespace std; int main() { return 0; } - Answer- the parts required in every C++ program comments - Answer- nonexecutable statements that are included in a program to provide information about what the program does, how it works, what input is expected, what output is generated, who wrote it, etc. preprocessor directives - Answer- tells the computer where to find the library for operations and data types preprocessor - Answer- a program that finds a...

C++ Exam Review Questions and answers, rated A+ to compile a C++-program g++ -o programname **program name is up to you run a C++ program ./programname comments //This is a single-line comment. /* This is a multi-line comment. It can have multiple lines! */ input/output on screen #include <iostream> using namespace std; output cout << "string of characters"; cout << variable; << end

C857 Test Questions and Answers(variable -ANSWER named location in memory main function -ANSWER called when the program starts cout -ANSWER a filestream variable that represents the default output device #include <iostream> -ANSWER include directive needed to allow use of the various I/O operators such as cout and cin. preprocessor directive -ANSWER C program line beginning with # that provides an instruction to the preprocessor; instruction to the compiler to change the source...

variable -ANSWER named location in memory main function -ANSWER called when the program starts cout -ANSWER a filestream variable that represents the default output device #include <iostream> -ANSWER include directive needed to allow use of the various I/O operators such as cout and cin. preprocessor directive -ANSWER C program line beginning with # that provides an instruction to the preprocessor; instruction to the compiler to change the source code before compilation. how...

COS1512 ASSIGNMENT 4 2023. 100% CORRECT questions, answers, workings and otherwise numberpower can be calculated with the formula: number x numberpower-1 1. #include <iostream>using namespace std; 2. float raised_to_power( ) 3. { 4. if (power < 0) 5. { 6. cout << "nError - can't raise to a negative powern"; 7. exit(1); 9. } 10. else if ( ) 11. return ( ); 12. else 13. return (number * raised_to_power(number, power - 1)); 14. } 15. main() 16. 17. float an...

What is printed by the following code? int main () { int array[5] = {10,30,50,70,90}; int *p = array; cout << *(p+1) + *(&*p) + 1; return 0; } correct answer: 41 What is the value in the variable Exam::total that is printed when this program is executed? #include<iostream> using namespace std; class Exam { public: static int total; Exam() { total++; } }; int Exam::total = 0; int main(){ Exam a, b, c; Exam *d, *e, *f = new Exam; cout << Exa...

2-1 ********************************** * Programming Assignment 1 * * Computer Programming I * * Author: ??? * * Due Date: Thursday, Jan. 24 * ********************************** In your program, substitute ??? with your own name. If necessary, adjust the positions and the number of the stars to produce a rectangle. - Answer- #include <iostream> using namespace std; int main() { cout<<"**********************************" << endl; cout <<"* Programming Assi...

// This is a comment /* * Multi-line comment */ // Tells the compiler iostream library which contains the function cout #include <iostream> // Allows us to use vectors #include <vector> // Allows us to use strings #include <string> // Allow us to work with files #include <fstream> // Allows functions in the std namespace to be used without their prefix // std::cout becomes cout using namespace std;

What number is used by modern digital computers? - Answer- Binary Using "cin" and "cout" requires which library? - Answer- iostream What data type would be best for the value 42? - Answer- int What is the result of: pow( 3, 2 ) - Answer- 9 What value would the variable y be equal to? int y = 3 + 5 / 2; - Answer- 5 Which of the following are logical operators? a) &&, ||, != b) ||, !, == c) !, ||, && - Answer- c If x = 5, y = 6, z = 4, what is the value of x != z && ...

What is an unsigned type? - Answer a keyword to indicate only positive integers including zero If you set an unsigned type to a negative value, what happens? - Answer causes the value to underflow and wrap around to the max value of that data type When would you want to use an unsigned type? - Answer when you know a variable's number will always be positive What default values are assigned to your variables in C++? For example: int x; // what value does this have? - Answer no ...