Write C statements for the following Assume that x is declared as int Declare a

Question

Write C statements for the following Assume that x is declared as int Declare a pointer to an int, call It p Set p to point to x Set the value of x to 7 using p Print the value of x using p print the memory address of x using x Print the memory address of x using p Consider the following program with only the variable declarations shown for each statement, specify if it is true or false. Function alpha can access the external variable x In the inner block of the main function, the block variable y hides the local main variable y The declaration of variable k at the given location generates a compilation error Function beta is the only function that can access global variable x Write a recursive function count Down that prints numbers 1 to n in descending order Consider the following function Complete the function so it sets the sum of a, b, c in the variable pointed to by sum and their minimum in the variable pointed to by min :

Explanation / Answer

1.

a. int *p;

b.p=&x;

c.*p=7;

d.printf("the value of x=%d",*p);

e.printf("the address of x=%d",&x);

f.printf("the address of x=%d",p);

2.

a.false

b.true

c.false

d.true

3.Recursive function

void countdown(int n)

{

if(n==0)

return;

else

{

printf(" %d",n);

countdown(n-1);

}

4. Sum and min function

int findSpecial(int a,int b,int c,int *sum,int *min)

{

int sumAll=a+b+c;

int minAll;

if(a<=b&&a<=c)

minAll=a;

else if(b<=c&&b<=a)

minAll=b;

else

minAll=c;

*sum=sumAll;

*min=minAll;

}

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