Write a recursive function called firstOccurence that will return the position of the first occurence of a character within a string B.) Write a recursive function called sumAscii that will return the sum all of the chars within a string. For B the sum of the chars is their ASCII equivalent value. For instance the character 'A' has a value of 65.

C++ code is explained below

Explanation:

a- C++ code:

#include<iostream>

using namespace std;

#include <string.h>

int firstOccurence(char *s,char c) //recursive function

{

static int i;

if(!s[i])

{

return -1;

  }

  else

  {

      if(s[i]==c)

      return i;

      i++;

      firstOccurence(s,c);

  } }

int main()

{

char s[1000],c;

int n;

printf("Enter the string : "); //tales input

gets(s);

printf("Enter character to be searched: "); //takes input a character to be searched

c=getchar();

n=firstOccurence(s,c); //call function

if(n>-1)

   printf("character %c is first occurrence at location:%d ",c,n);

else

printf("character is not in the string ");

return 0;

}

b- C++ Code- This program takes a string and display sum of all characters in a string.

#include<iostream>

using namespace std;

int sumAscii(string s) //recursive function

{

int sum = 0;

if(s.length() == 0)

{

exit(0);

}

for (unsigned int i = 0; i < s.size(); i++)

{

sum += s[i];

}

return sum;

}

int main () //main function

{

cout << "This word adds up to " << sumAscii("CAT") << " in ASCII " << endl;

return 0;

}