CBSE Class 11 Computer Operators And Expressions In C++ Worksheet

1. Predict the output of the following program :

#include<iostream.h>

void main()

{

int x=5; int y=0;

y= x++ + 10;

cout<<”y =”<<y <<endl;

cout<<”x= “<<x<<endl;

y=((x>=5)?1 : 0);

cout<<” Now the value of y is :”<<y;

}

2. Rewrite the corresponding C++ expressions for the following :

(i) Cos x . Tan-1 x

A2 + B2

(ii) 4 – 6e2y

(iii) | x| + y is not equal to |x + y|

3. Given the following set of identifiers -

char x;

int y;

short sh;

float fval;

long lval;

Identify the datatype of the following expressions :

(i) y * fval + sh

(ii) fval/lval + int/sh

4. Evaluate the following expressions :

(i) x + y < z && x + z >y || x-z <= y-x+2

if x=4, y=5 and z=2

(ii) z>x && x+3 || !( 2*y + z –x)

if x=10 , y=15 , z=5

(iii) c= a-(b++) * (--a)

if a=5 , b=3 and d=15

5. Predict the output of the following program :

#include<iostream.h>

#include<math.h>

void main()

x=9.15;

y= - 6.08;

int z=2;

cout<<ciel(x)<<endl;

cout<<floor(y)<<endl;

cout<<pow(z,10)<<endl;

cout<<sizeof(x)<<endl;

z*=10;

cout<<”z = “ <<z<<endl;

}

PROGRAMS

1. WAP to accept marks of a student out of 100 and display “PASS “ if the student scores >=40 and “FAIL” otherwise.

2. WAP to accept a number and display its square root and modulus.

3. Do quest no- 5 of the assignment ( use of math.h)