MATLAB

Question 1

if (expression)
statements
elseif (expression)
Statements
else if
Statements
end

Answer 1

“If” statement

Question 2

repeatedly execute a block of code

For:
x = ones(1,10);
for n = 2:6
x(n) - 2*x(n-1);
end

While:
n =1;
nfactorial =1;
while nfactorial <1e100
n = n+1;
nfactorial = nfactorial*n;
end

Answer 2

MATLAB Loop structures