Thread: displaying characters per line and checking prime numbers

So how much of it can you do?
Don't just post your assignment without any effort on your part.

How about beginning with displaying the alphabet in any style you choose?

Then post that so we can see where you're at, and guide you to the next level.

Code:

	
	int c,cpl,pn,sd,vb;

	cout << "\n1) Print the alphabet using a specified number of characters per line.";
	cout << "\n2) Check to see if a number is prime.";
	cout << "\n3) Get the sum of the digits.";
	cout << "\n4) Check to see if the number is a valid base.";
	cout << "\n5) Exit\n";
	cout << "Choice: ";
	cin >> c;
	switch(c){
	case 1:
		cout << "How many characters per line? ";
		cin >> cpl;
		cout <<"a  b  c  d  e  f  g  h  i  j  k  l  m  n  o  p  q  r  s  t  u  v  w  x  y  z" << endl;break;
	case 2:
		cout << "Enter a number to check if it is a prime number.";
		cin >> pn;
		cout << "You want to see if " << pn << " is prime." << endl; break;

I'm going to need to use a for loop for both of these options but as to the logic that im going to use im clueless

Consider this snippet.

Code:

#include <iostream>
#include <string>

int main ( ) {
    std::string a = "abcd";
    for ( int i = 0 ; i < a.length(); i++ ) {
        std::cout << a[i] << std::endl;
    }
    return 0;
}