Sem 1: Computer Practical

8/2/2019 Sem 1: Computer Practical

1/23

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2/23

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(Basics)1. WAP to print text on the screen.2. WAP to check if number is odd or even.3. WAP to check which of the two entered numbers is greater.4. WAP to check whether entered number is a leap year or not.5. WAP to convert temperature in Fahrenheit to Celsius.

(Looping)6. WAP to display the multiplication table of entered number.7. WAP to check if number is Palindrome or not.8. WAP to check if number is an Angstrom number or not.9. WAP to check if number is a prime or not.10. WAP to find the sum of Fibonacci series.

(Arrays)11. WAP to find the sum and average of 10 numbers using arrays.12. WAP to add elements of two 3x3 matrices.

(Pointers & Functions)13. WAP to understand pointers.14. WAP to swap two numbers.15. WAP to Swap two numbers using pointers (and functions).16. WAP to find the factorial of a number using recursive function.

(Structures)17. WAP using structures to input and display details of student.

(Strings)

18. WAP to enter two strings and get them to display.

(Data File Handling)19. WAP to enter and retrieve a character from a file.20. WAP to copy the contents of one file to another.

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3/23

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Write a Program to display text on screen.

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#include

int main()

{

printf(" Welcome to Neil's Practical File. XD ");

return0;

}

OUTPUT:

Welcome to Neil's Practical File. XD


4/23

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Write a Program to check if number is odd or even.

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#include

int main()

{

int num;

printf(" Enter the number: ");

scanf(" %d ",&num);

if(num%2==0)

printf("\n Number is Even. ");

else

printf("\n Number is Odd. ");

return0;

}

OUTPUT:

Enter the number: 5

Number is Odd.

Enter the number: 8

Number is Even.


5/23

5

Write a Program to check which of the two enterednumbers is greater.

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#include

main ()

{

int a,b,c;

printf("\n Enter two Numbers: ");

scanf("%d%d",&a,&b);

c=a ? b:a ;

printf("\n Greater number of the two is : %d \n",c);

}

OUTPUT:

Enter two Numbers: 5 357

Greater number of the two is : 357


6/23

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Write a Program to check whether entered number is aleap year or not.

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#include

main()

{

int Y;

printf("Enter any year: ");

scanf("%d",&Y);

if((Y%4==0))

printf("\nThe entered year is a Leap Year.");

elseprintf("\nThe entered year is not a Leap Year.");

return0;

}

OUTPUT:

Enter any year: 1991

The entered year is not a Leap Year.

Enter any year: 1994

The entered year is a Leap Year.


7/23

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Write a Program to convert temperature in Fahrenheitto Celsius.

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#include

int main()

{

float Tf, Tc;

printf("Enter temperature in Farenheit: ");

scanf("%f",&Tf);

Tc=((Tf-32)*(5.0/9.0));

printf("The temperature in Celcius is %f", Tc);

return0;

}

OUTPUT:

Enter temperature in Farenheit: 98.6

The temperature in Celcius is 37.000000


8/23

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Write a Program to display the multiplication table ofentered number.

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#include

int main()

{

int i,n,a;

printf("\nEnter the number whose table is to be printed : ");

scanf("%d",&n);

for(i=1;i


9/23

9

Write a Program to check if number is Palindrome ornot.

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#include

main()

{

int num; //number inputted by user

int n; //temporary storage

int rev=0;//stores the reverse of that number

int digit;//stores the individual digits

printf(" Enter the number to check if it's Palindrome or not:

");scanf("%d", &num);

n=num;

do

{

digit=n%10;

rev=(rev*10)+digit;

n=n/10;

}

while(n>0);

if(rev==num){

printf("\n The number is a palindrome. ");

}

else

{

printf("\n The number is not a palindrome. ");

}

}

OUTPUT:

Enter the number to check if it's Palindrome or not: 121

The number is a palindrome.

Enter the number to check if it's Palindrome or not: 153

The number is not a palindrome.


10/23

10

Write a Program to check if number is an Angstromnumber or not.

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#include

main()

{

int num; //number inputted by user

int n; //temporary storage

int A=0;//stores the sum of the cube of the digits

int digit;//stores the individual digits

printf(" Enter the number to check if it's Angstrom or not:

");

scanf("%d", &num);

n=num;

do

{

digit=n%10;

A+=(digit*digit*digit);

n=n/10;

}

while(n>0);

if(A==num)

{printf("\n The number is an Angstrom number. ");

}

else

{

printf("\n The number is not an Angstrom number. ");

}

}

OUTPUT:

Enter the number to check if it's Angstrom or not: 121

The number is not an Angstrom number.

Enter the number to check if it's Angstrom or not: 153

The number is an Angstrom number.


11/23

11

Write a Program to check if number is a prime or not.

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#include

int main()

{

int num;

printf("\n Enter the number to check whether prime or not:

");

scanf(" %d ",&num);

if( num==0|| num==1)

{

printf("\n The number is not prime. ");

}

else

{int i=0;

int flag=1;// 1 if prime, 0 if not prime

for(i=2; i


12/23

12

Write a Program to find the sum of Fibonacci series.

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#include

main()

{

int sum=0;

int n;

printf("\n Till which term should the Fibonacci series be

found: ");

scanf(" %d ", &n);

printf("\n The Fibonacci Series: \n ");

if( n==0)

{

printf(" None ");

}

elseif( n==1)

{

printf("0");

}

else

{

int i,temp;

int first=0,second=1;

//2nd term

printf("%d + %d ",first,second);

sum+=second;

for(i=3; i


13/23

13

Write a Program to find the sum and average of 10numbers using arrays.

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#include

int main()

{

//INITIAL DECLARATIONS

int x[10];

int sum=0;

float avg;

int i;

//INPUT

printf("\n Enter the 10 numbers: \n ");

for(i=0; i


14/23

14

Write a Program to add elements of two 3x3 matrices.

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#include

int main()

{

int A[3][3], B[3][3];

int i,j;

//INPUT of MATRIX/ 2D ARRAY A

printf("\n Enter the elements of matrix A: \n");

for(i=0; i


15/23

15

OUTPUT:

Enter the elements of matrix A:1 2 3

1 2 3

3 2 1

Enter the elements of matrix B:

3 2 1

3 2 1

1 2 3

Adding matrices A and B = matrix C

Matrix C is:4 4 4

4 4 4

4 4 4


16/23

16

Write a Program to understand pointers.

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#include

main()

{

int a,*p;

printf("Enter an integer: ");

scanf("%d",&a);

p =&a;

printf("\nAddress of a: %u",&a);

printf("\n\nAddress of p: %u",&p);

printf("\n\nValue of p: %d", p);printf("\n\nValue of a: %d", a);

printf("\n\nValue of a: %d",*p);

}

OUTPUT:

Enter an integer: 7

Address of a: 3219592736

Address of p: 3219592732

Value of p: -1075374560

Value of a: 7

Value of a: 7


17/23

17

Write a Program using structures to input and displaydetails of student.

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#include

struct student

{

char name[20];

float marks;

int age;

}b1, b2;

main(){

printf("\n Enter Names, Marks & Age of the students:

\n");

scanf("%s %f %d",&b1.name,&b1.marks,&b1.age);

scanf("%s %f %d",&b2.name,&b2.marks,&b2.age);

printf("\n This is what you have entered: \n");

printf("\n %s %f %d ",b1.name,b1.marks,b1.age);

printf("\n %s %f %d ",b2.name,b2.marks,b2.age);

}

OUTPUT:

Enter Names, Marks & Age of the students:

Neil 94 18

Bugger 0 100

This is what you have entered:

Neil 94.000000 18

Bugger 0.000000 100


18/23

18

Write a program to swap two numbers.

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#include

int main()

{

int a,b;

printf("\n Enter the value of A: ");

scanf("%d",&a);

printf(" Enter the value of B: ");

scanf("%d",&b);

//Swapping:

int temp;

temp=a;

a=b;

b=temp;

printf("\n After Swapping... \n");

printf(" A: %d", a);

printf("\n B: %d", b);

return0;}

OUTPUT

Enter the value of A: 5

Enter the value of B: 10

After Swapping...

A: 10B: 5


19/23

19

Write a Program to Swap two numbers using pointers.

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#include

void Swap(int*a, int*b)

{ // *Note the syntax of pointers for arguments

//Swapping:

int temp;

temp=*a; // *(pointer_variable) to access the value

*a=*b;

*b=temp;

}

int main()

{

int a,b;

printf("\n Enter the value of A: ");

scanf("%d",&a);

printf(" Enter the value of B: ");

scanf("%d",&b);

Swap(&a,&b); // *Note the & during such a call

printf("\n After Swapping... \n");

printf(" A: %d", a);

printf("\n B: %d", b);

return0;

}

OUTPUT:

Enter the value of A: 4

Enter the value of B: 9

After Swapping...

A: 9

B: 4


20/23

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Write a Program to find the factorial of a number usingrecursive function.

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#include

int fact(int f)

{

if( f==1|| f==0)

{return1;}

else

{

f=f*fact(f-1);

return f;}

}

main()

{

int num;

int factorial;

printf(" Enter the number whose factorial needs to be found:

");

scanf(" %d ", &num);

factorial=fact(num);

printf("\n The factorial of %d is %d. ",num,factorial);

}

OUTPUT:

Enter the number whose factorial needs to be found: 0

The factorial of 0 is 1.

Enter the number whose factorial needs to be found: 4

The factorial of 4 is 24.


21/23

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Write a Program to enter two strings and get them todisplay.

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#include

int main()

{

char S1[20];

char S2[20];//the datatype string doesn't exist in C.

//method 1: can only take one word at a time (till spaces).

printf("\n Enter the first string: ");

scanf(" %s ", S1);

//method 2: can take whole line including spaces.printf(" Enter the second string: ");

gets(S2);

printf("\n The Strings are:\n 1st: %s\n 2nd: ",S1);

puts(S2);

return0;

}

OUTPUT:

Enter the first string: Hello

Enter the second string: World

The Strings are:

1st: Hello

2nd: World

Enter the first string: New YorkEnter the second string:

The Strings are:

1st: New

2nd: York


22/23

22

Write a Program to enter and retrieve a character froma file using DATA FILE HANDLING.

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#include

main()

{

char ch;

FILE *file;

file = fopen("abc.txt","w");

printf("\nEnter any character into FILE: ");

scanf("%c",&ch);

putc(ch, file);

fclose(file);

file = fopen("abc.txt","r");

ch = getc(file);

printf("\nEntered Character from FILE: %c", ch);

}

OUTPUT:

Enter any character into FILE: Y

Entered Character from FILE: Y


23/23

Write a program to copy the contents of one file toanother using DATA FILE HANDLING.

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#include

main()

{

char ch;

FILE *fp1,*fp2;

fp1 = fopen("abc.txt","r");

fp2 = fopen("xyz.txt","w");

while((ch = getc(fp1))!= EOF)putc(ch, fp2);

fclose(fp1);

fclose(fp2);

return0;

}

OUTPUT:

(none)

Sem 1: Computer Practical

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