[Androto]

WHAT IS WRONG WITH THIS? I GOT LIKE OVER 107 MISTAKES. I'M SURE THERES JUST ONE LITTLE THING I DID WRONG WHICH MADE THE REST OF IT WRONG.

#include <iostream>
#include <ctsdlib>
#include <strings>

int main()
{
	int i(0);
	string sent;
	string acount;
	string bcount;
	string ccount;
	string dcount;
	string ecount;
	string fcount;
	string gcount;
	string hcount;
	string icount;
	string jcount;
	string kcount;
	string lcount;
	string mcount;
	string ncount;
	string ocount;
	string pcount;
	string qcount;
	string rcount;
	string scount;
	string tcount;
	string ucount;
	string vcount;
	string wcount;
	string xcount;
	string ycount;
	string zcount;
	
	
	letter_counter;
	
	
	while (i < sent.size)
	{
		switch( sent[i] )
		{
			case 'a';
			acount++;
			break;
		}
		{
			case 'b';
			bcount++;
			break;
		}
		{
			case 'c';
			ccount++;
			break;
		}
		{
			case 'd';
			dcount++;
			break;
		}
		{
			case 'e';
			ecount++;
			break;
		}
		{
			case 'f';
			fcount++;
			break;
		}
		{
			case 'g';
			gcount++;
			break;
		}
		{
			case 'h';
			hcount++;
			break;
		}
		{
			case 'i';
			icount++;
			break;
		}
		{
			case 'j';
			jcount++;
			break;
		}
		{
			case 'k';
			kcount++;
			break;
		}
		{
			case 'l';
			lcount++;
			break;
		}
		{
			case 'm';
			mcount++;
			break;
		}
		{
			case 'n';
			ncount++;
			break;
		}
		{
			case 'o';
			ocount++;
			break;
		}
		{
			case 'p';
			pcount++;
			break;
		}
		{
			case 'q';
			qcount++;
			break;
		}
		{
			case 'r';
			scount++;
			break;
		}
		{
			case 's';
			scount++;
			break;
		}
		{
			case 't';
			tcount++;
			break;
		}
		{
			case 'u';
			ucount++;
			break;
		}
		{
			case 'v';
			vcount++;
			break;
		}
		{
			case 'w';
			wcount++;
			break;
		}
		{
			case 'x';
			xcount++;
			break;
		}
		{
			case 'y';
			zcount++;
			break;
		}
		{
			case 'z';
			zcount++;
			break;
		}
		i++;
	}
		
	if (acount > 0)
		cout << "a = " << acount << endl;
		
	if (bcount > 0)
		cout << "b = " << bcount << endl;

	if (ccount > 0)
		cout << "c = " << ccount << endl;
		
	if (dcount > 0)
		cout << "d = " << dcount << endl;
		
	if (ecount > 0)
		cout << "e = " << ecount << endl;
		
	if (fcount > 0)
		cout << "f = " << fcount << endl;
		
	if (gcount > 0)
		cout << "g = " << gcount << endl;
		
	if (hcount > 0)
		cout << "h = " << hcount << endl;
		
	if (icount > 0)
		cout << "i = " << icount << endl;
		
	if (jcount > 0)
		cout << "j = " << jcount << endl;
		
	if (kcount > 0)
		cout << "k = " << kcount << endl;
		
	if (lcount > 0)
		cout << "l = " << lcount << endl;
		
	if (mcount > 0)
		cout << "m = " << mcount << endl;
		
	if (ncount > 0)
		cout << "n = " << ncount << endl;
		
	if (ocount > 0)
		cout << "o = " << ocount << endl;
		
	if (pcount > 0)
		cout << "p = " << pcount << endl;
		
	if (qcount > 0)
		cout << "q = " << qcount << endl;
		
	if (rcount > 0)
		cout << "r = " << rcount << endl;
		
	if (scount > 0)
		cout << "s = " << scount << endl;
		
	if (tcount > 0)
		cout << "t = " << tcount << endl;
		
	if (ucount > 0)
		cout << "u = " << ucount << endl;
		
	if (vcount > 0)
		cout << "v = " << vcount << endl;
		
	if (wcount > 0)
		cout << "w = " << wcount << endl;
		
	if (xcount > 0)
		cout << "x = " << xcount << endl;
		
	if (ycount > 0)
		cout << "y = " << ycount << endl;
		
	if (zcount > 0)
		cout << "z = " << zcount << endl;
}