The Program in a C++ program to Count String “aa” in a given string is given below:
#include <iostream>
#include <string>
using namespace std;
int main() {
string input;
cout<<"Hello Codeauri Family, Enter the characters here:\n";
cin>>input;
int count = 0;
for (int i = 0; i < input.length()-1; i++) {
if (input.substr(i, 2) == "aa") {
count++;
}
}
cout << "The number of times the string 'aa' appears is: " << count << endl;
return 0;
}
Output:
Hello Codeauri Family, Enter the characters here:
americaa
The number of times the string ‘aa’ appears is: 1
Pro-Tips💡
This program prompts the user to enter a string, then it uses a for loop to iterate through the characters of the input string,
checking if the current character and the next character form the substring “aa” using substr function.
If they do, it increments a count variable.
Finally, it prints out the count variable, which represents the number of times the string “aa” appears in the input string.
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