Question

c++

Write a function Count_m_z that takes a string as an input parameter argument and counts the number of m, n, o, ... z characters in it. The function returns an integer value for the number of times those 14 lowercase letters appear in the input string.

• Your function should be named Count_m_z

• Your function should take one string parameter

• Your function should return the number of m, n, o, ... z characters as an integer

• Your function should not print/output anything

Edge Cases

• If the string is empty, return -1

• If there are no m, n, o, ... z characters in the string, return -2

Examples

• string "muenzinger" → return 6

• string "mUENZINGER" → return 1

• string "MUENZINGER" → return -2

Answer 1

#include <iostream>
#include <string>
using namespace std;

//function to count the number of m, n, o, ... z characters
int Count_m_z(string str)
{
//declare and initialization of variable
int count = 0, length = 0;
  
//check the input string character by character
while (str[length] != '\0')
{
//check with ASCII value
//ASCII value of m is 109
//ASCII value of z is 122
if(str[length]>108 && str[length]<123)
{
count++;
}
length++;
}
  
//if string length is zero
if(length==0)
return -1;
  
//if number of m, n, o, ... z characters is zero
if(count==0)
return -2;
  
return count;
}

int main()
{
//variable declaration
string str;
str = "muenzinger";
//display the result
cout<<endl<<"The number of m, n, o, ... z characters: "<<Count_m_z(str);
return 0;
}

OUTPUT: