#include<iostream>
using namespace std;

int main()
{
	char string[100];
	int c=0,count[25]={};

	cout<<"Enter a string\n";
	cin.get(string,100);
	while( string[c] != '\0' )
	{
		if( string[c] >= 'a' && string[c] <= 'z' )
			count[string[c]-'a']++;
		c++;
	}
	for(c=0;c<26;c++)
	{
		if(count[c])
			cout<< (char) (c+'a')<<" occurs "<< count[c] << " times in the entered string.\n";
	}
	return 0;
}