Inputting array problems - c++

Question

Start of the program you need to input how many elements you want for example if selected 3 you can type a b c but if you input more than 3 elements a b c d the program instantly crashes.
Haven't figured out how to make if you input the more than 4 element a b c d it will only read the a b c part.
#pragma hdrstop
#pragma argsused
#include <string>
#include <tchar.h>
#include <conio.h>
#include <stdio.h>
#include <math.h>
#include <iostream.h>
#include <iomanip>
#include <sstream>
int main() {
char teikums[100]; // Masiva lielums
int c, i, count, patsk; // Patskani
char yesno; // Atkartosanas Mainigais
do {
system("cls"); // Notira Ekranu
patsk = 0; // Pieskir vertibu
cout << "Ievadi Massiva lielumu 1-100: ";
cin >> count;
if (count > 100 || count < 1) {
cout << "Massivs nedriklst but lielaks par 100 vai mazaks par 0";
}
else {
cout << "Ievadi " << count << " burtus vienu pa vienam\n";
for (i = 1; i <= count; i++) {
cin >> teikums[i];
}
cout << "\nIzmantotie Patskani:";
for (i = 0; teikums[i] != '\0'; i = i + 2) {
if (teikums[i] == 'a' || teikums[i] == 'e' ||
teikums[i] == 'o' || teikums[i] == 'o' ||
teikums[i] == 'u' || teikums[i] == 'A' ||
teikums[i] == 'E' || teikums[i] == 'I' ||
teikums[i] == 'O' || teikums[i] == 'U') {
++patsk;
cout << teikums[i];
}
}
cout << "\nPatskanu Skaits: " << patsk;
}
cout << ("\nVai velaties atkartot(Y/cits):");
// prasa lietotajam vai velas atkartot
cin >> yesno;
if (yesno == 'y' || yesno == 'Y') {
}
else {
return 0;
}
}
while (tolower(yesno) != 'n');
getch();
}

Answer 1

Your program will not behave as you expect if you enter in more numbers than your count because of how it is parsing the inputs.
for (i = 1; i <= count; i++) {
cin >> teikums[i];
}
Let's say your count is 1, and you enter in 1 2.
This will loop once and say teikum[1] to be 1, and 2 is still leftover waiting to be grabbed by an input stream. Below that you have,
cin >> yesno;
which will now set yesno to be 2 and your program will terminate because 2 != 'n'. You will need to either input the data correctly as your format expects or clear cin using something like cin.ignore('\n') which will ignore the current line of input.
Further, you start your i at 1 and go up to count but your array is only size 100. If count is 100, it will try to access teikum[100] which will be out of bounds as your array goes from 0 - 99