>>> import math
>>> a=input(“enter degree”)
enter degree30
>>> b=math.cos(30)
>>> c=(math.pi/180.00)*30.00
>>> print c
SyntaxError: invalid syntax
>>>
why does the system show syntax error ?
it highlights c and declares it as invalid syntax
import math a=input(“enter degree”) b=math.cos(30) print “value of b= “,b c=(math.pi/180)*30 print “value of c= “,c
output Python 2.7.4 (default, Apr 6 2013, 19:54:46) [MSC v.1500 32 bit (Intel)] on win32 Type “copyright”, “credits” or “license()” for more information. >>> ================================ RESTART ================================ >>> enter degree30 value of b= 0.154251449888 value of c= 0.523598775598 >>> its working
import math
a=input(“enter degree”)
b=math.cos(30)
print “value of b= “,b
c=(math.pi/180)*30
print “value of c= “,c
output
Python 2.7.4 (default, Apr 6 2013, 19:54:46) [MSC v.1500 32 bit (Intel)] on win32
Type “copyright”, “credits” or “license()” for more information.
>>> ================================ RESTART ================================
>>>
enter degree30
value of b= 0.154251449888
value of c= 0.523598775598
>>>
Constants
A value which is hard coded into a program, which remains unchanged through out the program. Constants are of five (5) types:
1. char constant: Character constant
2. int constant: Integer constant
3. float constant: Single precision floating point constant
4. double constant Double precision floating point constant
5. String constant
Note: C++ does not support constant of the type void.
Examples of C++ Constants are given below:
Data Type Constants
char ‘A’,’B’,’C’,…,’X’,’Y’,’Z’,’a’,’b’,’c’,…,’x’,’y’,’z”0′,’1′,…,’8′,’9′,’!’,’@’,’#’,’%’,’^’,’&’,’*’,’+’,…,’?’
int 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, …, 2147483647,0, -1, -2, -3, -4, -5, -6, -7, -8, -9, …, -2147483648
float/double 0.0, 15.75, 96.625, 1.25, 28.575, 2.3333, 0.69, 10.0,-25.8, -0.72, -154.85, -5.0, -759.625, -89.025, -7.2
string “Amit”, “Pizza”, “India”, “Apple”, “G”, “9”, “$”, “e” “GH-14/12”, “23981535”, “20/10/2005”, “***”, “6.0”
Type modifiers are used to change default type of the built-in data types. Type modifiers supported by C++ are long, short, signed and unsigned. They generally change the storage (Memory Allocation) for fundamental Data Type.
for Example
Int generally required 4 bytes to Store Data but if use type modifer short int it required only 2 bytes
cin is console input used to get the value from user and store to variable but does not allow space
cin treats space as a separator . It required iostream.h header file
gets() is also used to get the string value only from user and store it into variable but it does not
treat space as separator so space is also get stored in string variable. it required stdio.h header file
example
void main()
{
char City[20];
cout<>City;
cout<<"Your City is :<<City;
}
let assume if user run this code and user input New Delhi at run time to store in variable City only New will be stored as cin treat space as sperator so cout statement will only New
output
Enter City: New Delhi
Your City is : Delhi
To input a string with space, we have to use function gets() from the header file stdio.h .
void main()
{
char City[20];
cout<<" Enter City:";
gets(City);
cout<<"Your City is :<<City;
}
let assume if user run this code and user input New Delhi at run time to store in variable City it will store complete string New Delhi Including space
output
Enter City: New Delhi
Your City is : New Delhi
Sir can u give some info about the ctype and is alpha and all that in short and what the values which they return…..
Give some info about what is conditions for is isalpha and alll
toupper(ch) int Convert a lowercase ch into uppercase
tolower(ch) int Convert a uppercase ch into lowercase
isupper(ch) int Checks if ch is uppercase
islower(ch) int Checks if ch is lowercase
isdigit(ch) int Checks if ch is digit
isalpha(ch) int Checks if ch is alphabet (letter)
isalnum(ch) int Checks if ch is either alphabet or digit
Return value of functions isupper(), islower(), isdigit(), isalpha() and isalnum() vary from compiler to compiler. Table is given below showing return value of isupper(), islower(), isdigit(), isalpha() and isalnum() using Borland C++ compiler:
Function Digit (ch) Uppercase (ch) Lowercase (ch) Special (ch)
in ur code while(r>0) will not run as r is not assigned any value before use
For LCM and HCF we will use do while loop
correct code
//Program to find HCF and LCM of two integers
#include
#include
void main()
{
int a, b;
cout<>a;
cout<>b;
int prod=a*b, r;
do
{
r=a%b;
a=b;
b=r;
}
while(r>0);
cout<<"HCF="<<a<<endl;
cout<<"LCM="<<(prod/a)<<endl;
getch();
}
#include #include int checkpalindrome(int n); void main() { int n,z; cout<>n; z=checkpalindrome(n); // in your code spelling of functon name was wrong and since the function in returning int value it must be storedin some variable if(z==1) cout<<"Palindrome"; else cout<<"not Palindrome"; getch(); } int checkpalindrome(int n) { int m=0,p=n,d; while(n!=0) { d=n%10; m=10*m+d; n=n/10; } return p==m; }
Nikhil man mind your business I know what to do and when to do and I checked and it was not there when I checked it so better not to poke your noseanywhere and everywhere you like to
if(d!=0){
cout<<"Number is a prime number"<<endl;
}
else if(d==0){
cout<<"Number is a composite number"<<endl;
}
correct code
#include
void main()
{
int n;
cin>>n;
int k=2, prime=1;
while (k<n && prime==1)
{
if (n%k==0)
prime=0;
k++;
}
if (prime==1)
cout<<n<<" Prime Number"<<endl;
else
cout<<n<<" Composite Number"<<endl;
}
int n;
cout<>n;
int k=2, prime=1;
while (k<n && prime==1)
{
if (n%k==0)
prime=0;
k++;
}
if (prime==1)
cout<<n<<" Prime Number"<<endl;
else
cout<<n<<" Composite Number"<<endl;
void main()
{
int n, sum=0;
cout<>n;
int x=1; //Initialisation of control variable
while (x<=n) //Terminating Condition
{
cout<<x*x<<"," // will display above series
sum+=x*x; // will also do sum of the above series
x++; //Update of control variable
}
cout<<“Sum=”<<sum<<endl;
}
VKS-LEARNING HUB
there*
since you have use ” before a
variable name should not start with any special character
it should
a=43
b=43
c=a+b
print c
>>> import math
>>> a=input(“enter degree”)
enter degree30
>>> b=math.cos(30)
>>> c=(math.pi/180.00)*30.00
>>> print c
SyntaxError: invalid syntax
>>>
why does the system show syntax error ?
it highlights c and declares it as invalid syntax
import math a=input(“enter degree”) b=math.cos(30) print “value of b= “,b c=(math.pi/180)*30 print “value of c= “,c
output Python 2.7.4 (default, Apr 6 2013, 19:54:46) [MSC v.1500 32 bit (Intel)] on win32 Type “copyright”, “credits” or “license()” for more information. >>> ================================ RESTART ================================ >>> enter degree30 value of b= 0.154251449888 value of c= 0.523598775598 >>> its working
import math
a=input(“enter degree”)
b=math.cos(30)
print “value of b= “,b
c=(math.pi/180)*30
print “value of c= “,c
output
Python 2.7.4 (default, Apr 6 2013, 19:54:46) [MSC v.1500 32 bit (Intel)] on win32
Type “copyright”, “credits” or “license()” for more information.
>>> ================================ RESTART ================================
>>>
enter degree30
value of b= 0.154251449888
value of c= 0.523598775598
>>>
Sir plzzzzz can u telll me that what is a constant
Try to telll me as sooon as possssible
Constants
A value which is hard coded into a program, which remains unchanged through out the program. Constants are of five (5) types:
1. char constant: Character constant
2. int constant: Integer constant
3. float constant: Single precision floating point constant
4. double constant Double precision floating point constant
5. String constant
Note: C++ does not support constant of the type void.
Examples of C++ Constants are given below:
Data Type Constants
char ‘A’,’B’,’C’,…,’X’,’Y’,’Z’,’a’,’b’,’c’,…,’x’,’y’,’z”0′,’1′,…,’8′,’9′,’!’,’@’,’#’,’%’,’^’,’&’,’*’,’+’,…,’?’
int 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, …, 2147483647,0, -1, -2, -3, -4, -5, -6, -7, -8, -9, …, -2147483648
float/double 0.0, 15.75, 96.625, 1.25, 28.575, 2.3333, 0.69, 10.0,-25.8, -0.72, -154.85, -5.0, -759.625, -89.025, -7.2
string “Amit”, “Pizza”, “India”, “Apple”, “G”, “9”, “$”, “e” “GH-14/12”, “23981535”, “20/10/2005”, “***”, “6.0”
Sir can u giv the answer to 10th question of assssignment 1 it is not there in the answer key
Type modifiers are used to change default type of the built-in data types. Type modifiers supported by C++ are long, short, signed and unsigned. They generally change the storage (Memory Allocation) for fundamental Data Type.
for Example
Int generally required 4 bytes to Store Data but if use type modifer short int it required only 2 bytes
Answer is also given in Sample Paper 2
How gets is better than cin in terms of string …
Explain with a example how to do dis now
cin is console input used to get the value from user and store to variable but does not allow space
cin treats space as a separator . It required iostream.h header file
gets() is also used to get the string value only from user and store it into variable but it does not
treat space as separator so space is also get stored in string variable. it required stdio.h header file
example
void main()
{
char City[20];
cout<>City;
cout<<"Your City is :<<City;
}
let assume if user run this code and user input New Delhi at run time to store in variable City only New will be stored as cin treat space as sperator so cout statement will only New
output
Enter City: New Delhi
Your City is : Delhi
To input a string with space, we have to use function gets() from the header file stdio.h .
void main()
{
char City[20];
cout<<" Enter City:";
gets(City);
cout<<"Your City is :<<City;
}
let assume if user run this code and user input New Delhi at run time to store in variable City it will store complete string New Delhi Including space
output
Enter City: New Delhi
Your City is : New Delhi
Sir can u give some info about the ctype and is alpha and all that in short and what the values which they return…..
Give some info about what is conditions for is isalpha and alll
Kindly reads the notes also.
Functions from the header file
Function Name Return Value Usage
toupper(ch) int Convert a lowercase ch into uppercase
tolower(ch) int Convert a uppercase ch into lowercase
isupper(ch) int Checks if ch is uppercase
islower(ch) int Checks if ch is lowercase
isdigit(ch) int Checks if ch is digit
isalpha(ch) int Checks if ch is alphabet (letter)
isalnum(ch) int Checks if ch is either alphabet or digit
Return value of functions isupper(), islower(), isdigit(), isalpha() and isalnum() vary from compiler to compiler. Table is given below showing return value of isupper(), islower(), isdigit(), isalpha() and isalnum() using Borland C++ compiler:
Function Digit (ch) Uppercase (ch) Lowercase (ch) Special (ch)
isupper(ch) 0 (False) 4 (True) 0 (False) 0 (False)
islower(ch) 0 (False) 0 (False) 8 (True) 0 (False)
isdigit(ch) 2 (True) 0 (False) 0 (False) 0 (False)
isalpha(ch) 0 (False) 4 (True) 8 (True) 0 (False)
isalnum(ch) 2 (True) 4 (True) 8 (True) 0 (False)
Sir where is the holiday homework?
Check Website home page or
https://vinodsrivastava.wordpress.com/class-xi-c/c-questions-hw/
Sir are all the notes posted on your site reqd. for scoring marks in tomorrows test?
Yes
Notes on loops condition and consoleinputout
#include
#include
void main()
{
int a,b;
cin>>a;
cin>>b;
int prod=a*b,r;
while(r>0)
{
r=a%b;
a=b;
b=r;
}
cout<<"HCF"<<a<<endl;
cout<<"LCM<<prod/a;
getch();
}
Sir in this question….the output displayed is wrong
for LCM ….a is shown
for HCF……b is shown
in ur code while(r>0) will not run as r is not assigned any value before use
For LCM and HCF we will use do while loop
correct code
//Program to find HCF and LCM of two integers
#include
#include
void main()
{
int a, b;
cout<>a;
cout<>b;
int prod=a*b, r;
do
{
r=a%b;
a=b;
b=r;
}
while(r>0);
cout<<"HCF="<<a<<endl;
cout<<"LCM="<<(prod/a)<<endl;
getch();
}
Sir do while is comming???????????!!!!
sir whats the difference between a = ’12’ and a = “12”? in a question they asked What is the type of each of these two constants?
‘a’ is character
“a” is striing
’12’ is character
“12” is string
#include
#include
int checkpalindrome(int n);
void main()
{
int n;
cout<>n;
int checkpalidrome(n);
getch();
}
int checkpalindrome(int n)
{
int m=0,p=n,d;
while(n!=0)
{
d=n%10;
m=10*m+d;
n=n/10;
}
return p==m;
}
Sir there is something wrong with this program as there is no output showing
#include #include int checkpalindrome(int n); void main() { int n,z; cout<>n; z=checkpalindrome(n); // in your code spelling of functon name was wrong and since the function in returning int value it must be storedin some variable if(z==1) cout<<"Palindrome"; else cout<<"not Palindrome"; getch(); } int checkpalindrome(int n) { int m=0,p=n,d; while(n!=0) { d=n%10; m=10*m+d; n=n/10; } return p==m; }
________________________________
sir can you upload the solutions of the sample paper and the output practice questions for cross checking and help thank you
uploaded
thanks a lot sir
sir and what about set 2
uploaded
Dude why dont u try checking the website 1st and then asking sir??!
Sir how do you write the code for a program that finds out if the number the user inputs is in the fibonacci sequence or not??
Nikhil man mind your business I know what to do and when to do and I checked and it was not there when I checked it so better not to poke your noseanywhere and everywhere you like to
And one more thing first check the sote for which you have asked the question it is always dere in his site……… So first check and den ask
i dint ask you azar, so who’s poking his nose into others’ business now??
Btw sir do we have to do HCF AND LCM AND GENERATING FIVONACCI NUMBERS AND ALL STUFF
Nikhil the is clawed tit for tat
do while is not coming, is it??
Sir what is wrong in this program?
int n,f=1,d=2;
cout<>n;
while(d!=0&&f<n)
{ d=n%f;
f++;
}
if(d!=0){
cout<<"Number is a prime number"<<endl;
}
else if(d==0){
cout<<"Number is a composite number"<<endl;
}
correct code
#include
void main()
{
int n;
cin>>n;
int k=2, prime=1;
while (k<n && prime==1)
{
if (n%k==0)
prime=0;
k++;
}
if (prime==1)
cout<<n<<" Prime Number"<<endl;
else
cout<<n<<" Composite Number"<<endl;
}
#include
void main()
{
}
int n;
cout<>n;
int k=2, prime=1;
while (k<n && prime==1)
{
if (n%k==0)
prime=0;
k++;
}
if (prime==1)
cout<<n<<" Prime Number"<<endl;
else
cout<<n<<" Composite Number"<<endl;
2. Write a complete C++ program to input n and generate following sequence of numbers …
a) 1^2, 2^2, 3^2, 4^2, …, (n-1)^2, n^2
void main()
{
int n, sum=0;
cout<>n;
int x=1; //Initialisation of control variable
while (x<=n) //Terminating Condition
{
cout<<x*x<<"," // will display above series
sum+=x*x; // will also do sum of the above series
x++; //Update of control variable
}
cout<<“Sum=”<<sum<<endl;
}
cout<<n;
Sir can u pls give full explaination for switch case
As soon possible pls
Not coming in term1