Q 1 . 
#include<stdio.h>
int main()
{
	int v=1.i=2.j=3.k=4.s=5.a[99];
	for(i=0;i<10;i++){a[i+1]=i-1;};a[i]=a[i+10];j=3*5-2*6;v=j*=i=10;if(printf("%d",j+i));
	if(v^j*5&&a[10]*a[56/23+23])printf("axyz%defgh%d,++i,6);
}

In the above question, identify the separate statements and re-write the program with proper indentation and resultant code should be easily readable. In this question , the code is not required to be compiled. Marks will be awarded  for indentation and rewriting code. 

Q2.
A . Calculate and display the area of a triangle with base = 7 and height = 12.
B. . Use heroes formula for calculating the area of triangle with sides 5 ,6, 11..
Include  #include<math.h> in your code and use squareroot = sqrt(); for calculating square root.

Q3. 
Write a program to assign following values to variables and print their value.
1.	Name
2.	Percentage marks with no decimal value.
3.	Value of 'e'
4.	Distance from sun in lightyears.
5.	3294967295
Marks will be given for the efficient choice of data types . Efficient data type is such that , it does not uses excess memory. Eg  - age can not be > 150 , so use of long data type is not efficient.
Assume some approximate values where value is not known.

Q4 . Calculate and display the volume of a hemisphere, radius = 14.