Question

Part 1.1

Write a function whose prototype is

void exchange ( /*inout*/ int *p, /*inout*/ int *q )

that takes two pointers to integer variables and exchanges the values in these variables.

Part 1.2

Write a function whose prototype is

char lastChar ( /*in*/ const char *str )

that takes a nonempty C-String as parameter and returns the last character in the string. For example the call lastChar ("srjc") will return the character c.

Part 1.3

Define an array of 35 of the Car structure variables.

Initialize the first three elements with the following data:

Make	Model	Year	Cost
Ford	Taurus	1997	$ 21,000
Honda	Accord	1992	$ 11,000
Lamborghini	Countach	1997	$ 200,000

Answer 1

Part 1.1

//function to swap two integer variable using pointere
void exchange(int *p, int *q)
{
//temp variable declaration
int temp;
  
//swap the values
temp = *p;
*p = *q;
*q = temp;
}

The screenshot of the above source code is given below:

Part 1.2

//function to returns the last character in the string
char lastChar(const char *str)
{
int size=0;
while(str[i] != '\0')
size++;
  
size--;
  
return str[size];
}

The screenshot of the above source code is given below:

Part 1.3

//car structure
struct Car
{
//variable
char Make[20];
char Model[20];
int Year;
float Cost;
};

struct Car c[35];

//initialize the first car structure variable
strcpy(c[0].Make, "Ford");
strcpy(c[0].Model, "Taurus");
c[0].Year = 1997;
c[0].Cost = 21000;

//initialize the second car structure variable
strcpy(c[1].Make, "Honda");
strcpy(c[1].Model, "Accord");
c[1].Year = 1992;
c[1].Cost = 11000;

//initialize the third car structure variable
strcpy(c[2].Make, "Lamborghini");
strcpy(c[2].Model, "Countach");
c[2].Year = 1997;
c[2].Cost = 200000;