Q1) Evaluate the following expressions:

(a) 10%2 = 0

(b) 23%4 = 3

(c) 36%6 = 0

(d) 13/5 = 2

(e) 13.0/5 = 2

Q2) Evaluate: (12%5+1)*2/6+5+3*(8/(22%10)-3)

Answer : 9

Q3) Evaluate: static_cast<int>(7.8 + static_cast<float>(15%3)/2) =

Answer: 7

Q4) True or false: The following is valid C++ code. Circle the error, if any.

#include <iostream>

using namespace std;

int main() {

char ch;

cin << ch;

cout << ch; /* Wrong sythax */

return 0;

}

Answer: False

Reason: Error in line cout<<ch

Wrong syntax. Correct statement must be like cout>>ch

Q5) What would you do to read input with spaces into a single string variable, str, from cin? Write the C++ statement.

Answer:

Sample code:

#include<iostream.h>

void main()

{

char str[100];   /* array of characters */

cout<<"enter any string: ";

cin>>str; /* reads a string including white spaces */

cout<<" you entered is: "<<str;

}

Sample output:

enter any string: hello how are you?

you entered is: hello how are you?

Q6)

//code

int x, y; //x and y are integers

double z; //z is a double

cin >> x >> y >> z;

//input

37

86.56

32

After the above piece of code executes, what will be the values of x, y, and z?

Answer:

after the program execution value of x will 37 value of y will be 86 and value of z will be 0.56

囲DOSBox 0.74, Cpu speed: max 100% cycles, Frameskip 0, Program: TC File Edit Search Run Compile Debug Project CHECK.CPP inclu

output:

DOSBox 0.74, Cpu speed: max 100% cycles, Frameskip 0, Program: TC B6.56 The values are B6 0.56

Q7) Evaluate (write its value next to each expression):

(a) 'a' < 'b'

Answer: True

(b) string("hope") < string("hype")

Answer: True

(c) string (“usm”) > string (“msu”) && string (“olemiss”) < string (“usm”)

Answer: False

(d) 10 + 12.5 <= 22.5

Answer: True

(e) !(5 < 2) || !(7 > 2)

Answer: True