PLEASE READ THE TASK AND THE DIRECTION CAREFULLY BEFORE YOU START. I NEED THE FULL TASK. IF YOU ARE NOT SURE WHAT TO DO, PLEASE SKIP MY QUESTION. I WILL GIVE NEGATIVE RATING FOR WRONG OR INCOMPLETE ANSWER.

THANK YOU.

TASK 1:

You need a driver program to test program below. To do this, write a main function that prompts for and input num, calls sumdigits , and outputs the result. You may assume that the input is a positive number and do not need to do any error checking (but realize that you would have to for a real program).

DIRECTIONS:

Please write the driver program separate from the main program. I need all work in very clear steps.

// CODE STARTS HERE

#include

using namespace std;

// Precondition: num > 0

// Postcondition: the return number of digits in num

int numDigits(int num);

// Precondition: num > 0, index > 0

// Postcondition: return the index'th digit of num

int getDigit(int num, int index);

// Precondition: num > 0

// Postcondition: the return value is the iterated sum of digits of num

int sumDigits(int num);

int main(){

int n;

cout<<"Enter a integer: ";

cin>>n;

cout<<"Sum of digits = "<

return 0;

}

int numDigits(int num){

int count = 0;

while(num > 0){

num = num/10;

count++;

}

return count;

}

// Precondition: num > 0, index > 0

// Postcondition: return the index'th digit of num

int getDigit(int num, int index){

int digit;

for(int i=1; i<=index; i++){

digit = num%10;

num = num/10;

}

return digit;

}

// Precondition: num > 0

// Postcondition: the return value is the iterated sum of digits of num

int sumDigits(int num){

int n = numDigits(num);

int sum = 0;

for(int i=1; i<=n; i++)

sum = sum + getDigit(num, i);

return sum;

}