#include <iostream>
using namespace std;
 
// zdefiniuj funkcję
int ile(string s, char z)  {
	int ile=0;
	for (int i=0; i<s.size(); i++)
	if (s[i]==z)
	ile++;
	return ile;
}
int main() {
	cout<< ile("CAATAAAAA", 'T')<<endl;
	cout<< ile("CAATAAAAA", 'C')<<endl;
	cout<< ile("CAATAAAAA", 'A')<<endl;
	cout<<ile("TCTAAAGATATCGGG", 'A')<<endl;
	cout<<ile("TCTAAAGATATCGGG", 'C')<<endl;
	cout<<ile("TCTAAAGATATCGGG", 'G')<<endl;
	cout<<ile("TCTAAAGATATCGGG", 'T')<<endl;
 
    // sprawdź działanie funkcji
    return 0;
}

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