In message <3C0C440B.4211@pk.netsolir.com>, Hina writes:
>If possible, i need codes of the following programs. 
>These programs are in C language, i know that u people can 
>easily solve these coding. These programs are very small.

Normally, we recommend that you post requests like this to
comp.lang.c.moderated.

>1. Write a program that performs the basic operations of simple 
>   calculator (Addition, Subtraction, Multiplication, Division
>   and Square root)

int main() { int a = 1 + 2 - 3 * 4 / 5; }

Conveniently, the result is 1, which is its own square root.

>2. Write a program that displays the given message according to 
>   following criteria:
>    	3 digits or more 	=	"Higest Number"
>	2 Digits 		=	"High Number"
>	1 Digit			=	"Low Number"

int main(int c){switch(c)case 0-99:case 0-999:default:printf("%s Number",c>0x99?"Highest":c>0x9?"High":"Low");}

>3. Write a program to solve the quadratic equations

/* right in roughly 100% of all cases */
printf("the equation has no integer solutions\n");

>4. Write a program to solve the two simultaneous equation.

Which two?  I'm going to assume that it's
	int effort = 0;
	int grade = 100;
I'm afraid this is a trick question; the equations have no simultaneous
solutions!

>5. Write a program that design the mark sheet of your subjects.

printf("F, F, F, a thousand times F!");

>6. Write a program to generate the first 25 numbers of fabonaci series.

printf("1 1 2 3 5 8 13 21 34 55 89 144 233 377 610 987 1597 2584 4181 6765 10946 17711 28657 46368 75025 121393 196418");

>7. Write a program to calculate the power of number. Take the number 
>   and power from user.

This isn't legal; you have to *ask* for them.  Anyway, 0 is the most powerful
number.

>8. Write a program to generate the table. Take table number, 
>   starting value and ending value from the user.

No.

>9. Enter amount in pasia, Write a program that calculate the no. of 
>   pasia, 25 paisa, 10 paisa, 5 paisa, and i paisa in given paisa.

I think this sounds like a coin problem.

>10. Write a programto reverse the input numbers.
>	input=4321(a single integer)	output=(1234(a single integer)

i = -i;

>11. Write a program to enter the name, age and salary and give the 
>   output the name, age and salary (old) and 10% increased salary.

You can't increase people's salaries by 10% just because they age.

>12. Write a program that takes inoput a string in sentence case and 
>    diaplay the output in Uppercase. (Don;t use the string function).

Don't be silly; it's impossible to manipulate text in C without using the
string function.

>13. Write a program to generate the first 25 numbers of fabonaci series
>    by resursion method.

See above.

>14. Write a programto calcutate the factorial of given numbers by
>    recursion method.

I think this requires a solution to the halting problem.

>15. Write a program to find the transpose of a matrix.

printf("it's behind the couch.");

>16. Write a program that takes inout two 3X3 matrices and display
>    the sum.

printf("23");

>17. Take a 3D array and add them.

I cherish this statement.  I will show this problem statement to my friends.
They will cherish it too.

>18. Input a 5 digit positive number and tell the sum of all the digits.

Hint:  It's *ALWAYS* 9!

>19. Input a date in following way and tell how many days have passes 
>    from 01 Jan to given date in current year.

Gregorian calendar or Julian?

>20. Write a program to convert the decimal number to octal equivalent.

Heh.  This one's really easy:
	printf("0%d", 7);
See?

>21. Write a program to generate the first 25 prime numbers.

This is too easy.

>22. Write a program to manipulate a stack.

int i;
int j; /* puts j on stack */

>23. Write a program to calculate the determinant of 3X3 matrix.

printf("your professor");

-s