Answer:
The program to this question can be given as:
Program:
#include <iostream> //header file
using namespace std; //using name space.
int CountCharacters(char userChar,string userString) //define function.
{
int count = 0; //define variable
for (int i=0;i<userString.length();i++) //loop
if (userString[i]==userChar) //if block
count++; //increment the value.
return count; //return value.
}
int main() //main method.
{
string userString= "Clanguage"; //define variable and assign value.
char userChar = 'a'; //define variable and assign value.
cout << CountCharacters(userChar,userString); //calling function and print value.
return 0;
}
Output:
2
Step-by-step explanation:
- In the above C++ programming language program we define a function that is "CountCharacters". Inside function parameters, we pass two parameters that are "userChar and userString". The userChar is a char variable that holds single character value and userString is a string variable that holds a string value.
- In the function, we define an integer variable that is "count". This variable counts the match value and returns its value.
- To counts values, we define a loop in a loop we use if statement that counts the value that how many time it occurs in a string value and return its value.
- In the main method, we define these variables ("userChar and userString") and assign values that are "a and Clanguage " and call the function and print function return value.