Exercises (arrays, pointers, functions).

Exercises (arrays, pointers, functions).

1. Write a program to update the value of the double variable flt_num from 123.45 to 543.21 by

using a double pointer.

2. Given a character variable ch and ch = ‘A’, write a program to update the value of ch to

character 'a' by using a pointer.

3. Given an integer array initialized as (int niceArray[]={23,4,4,56,45,5,6,1,34,787};), write a

program to increase each array element by 1000 using a nother pointer.

4. Write a function to calculate a factorial value. Then use that function to calculate 6C2 (possible

combinations in selecting 2 out of 6) and display the value.

(Hint: int factorial(int f1); combinations=factorial(6)/(factorial(2)*factorial(4)); )

5. Write seperate functions,

1. to read an integer value from the keyboard, (int readNumber(); )

2. to display two integer values, (void display(int a,int b); )

3. to swap two integer values, (void swap(int *c,int *d); )

Write a program to read two integer values to two variables, display them

before their values are swaped between them then swap those values and

finally display the two variables. (Hint: Use above functions)