Error in coin toss code

Trying to write a program to run a set number of trials where I flip n coins (chosen by user) successively and display the number of heads. I get this error when I run it

Error: File: coins.m Line: 5 Column: 1

At least one END is missing: the statement may begin here.

Here is the source code:

trial = 0;
C= 0;
head=0;
coins=input('How many coins to flip?');
while trial<10
    while C<coins
        rando=rand;
        if rando>0.5
            head=1+head;
        else 
            head = 0+head;
        C=C+1;
        print(head)
    end
trial = trial+1
end         

Answer 1

[Image Analyst]

If you type control-a (to select all) then control-i (to properly fix indenting) you'll see that an end is indeed missing:

trial = 0;
C= 0;
head=0;
coins=input('How many coins to flip?');
while trial<10
	while C<coins
		rando=rand;
		if rando>0.5
			head=1+head;
		else
			head = 0+head;
			C=C+1;
			print(head)
		end
		trial = trial+1
	end
 

This works and is based on your code, though there are better ways to do it, such as replacing the while with a for and getting a vector of all coin tosses in advance using randi() instead of using rand().

trial = 0;
C = 0;
head = 0;
coins = input('How many coins to flip? ');
maxTrials = 10;
while trial < maxTrials
	fprintf('Now beginning experiment number %d ...\n', trial)
	for k = 1 : coins
		rando = rand;
		if rando > 0.5
			head = 1 + head;
			fprintf('    Coin %d is a head.\n', k)
		else
			fprintf('    Coin %d is a tail.\n', k)
		end
	end
	trial = trial+1;
end
fprintf('Flipped %d heads (%.2f%%) over all %d experiments and %d total tosses.\n', ...
	head, 100 * head / (maxTrials*coins), maxTrials, maxTrials*coins);