Change for loop to while loop.

2 次查看（过去 30 天）
Cha Rot
Cha Rot 2022-4-24
回答： Dyuman Joshi 2022-4-24
I need to convert this code from the for loop to while loop but when I tried to do so, it always comes out as error. Please help :(
n = input ("Input a number: ");
fprintf("\nOdd number: ");
for i = 1:2:n
fprintf("%d ",i);
end
fprintf("\nEven number: ");
for i = 2:2:n
fprintf("%d ",i);
end
fprintf("\nSum of Even numbers: ");
sum = 0;
for i = 2:2:n
sum = sum + i;
end
fprintf("%d",sum);
prod = 1;
fprintf("\nProduct of Odd numbers: ");
for i = 1:2:n
prod = prod*i;
end
fprintf("%d",prod);
  5 个评论
显示 3更早的评论
Cha Rot
Cha Rot 2022-4-24
This is the code I tried.
n = input ("Input an integer: ");
fprintf('Odd numbers: ')
x = 1;
while x < n
x = 1:2:n;
fprintf(' %d',x)
break
end
fprintf('\nEven numbers:')
y = 0;
while y < n
y = 2:2:n;
fprintf(' %d',y)
break
end
fprintf('\nSum of even numbers:')
y = 0;
even_sum = 0;
while y < n
y = 2:2:n;
even_sum = even_sum + y;
fprintf(' %d', even_sum)
break
end
fprintf('\nProduct of odd numbers: ')
x = 1;
while x < n
x = 1:2:n;
odd_product = odd_product * x
fprintf(' %d',x)
break
end
But the last 2 parts, the sum of even numbers and product of odd numbers always produces the wrong outputs.
DGM
DGM 2022-4-24
Again:
fprintf('\nProduct of odd numbers: ')
x = 1;
odd_product = 1; % need to initialize to something nonzero
while x <= n % less than or equal to
odd_product = odd_product * x;
fprintf(' %d',odd_product) % not x
x = x+2; % increment x
end

请先登录，再进行评论。

请先登录，再回答此问题。

回答（2 个）

Dyuman Joshi
Dyuman Joshi 2022-4-24
Ran in:
%n = input ("Input an integer: ");
n=11;
fprintf('Odd numbers: ')
Odd numbers:
x=1;o=1;
while x<=n
fprintf(' %d',x)
o=o*x;
x=x+2;
end
1 3 5 7 9 11
fprintf('\nEven numbers:')
Even numbers:
y=0;e=0;
while y<=n
fprintf(' %d',y)
e=e+y;
y=y+2;
end
0 2 4 6 8 10
fprintf('\nSum of even numbers: %d', e)
Sum of even numbers: 30
fprintf('\nProduct of odd numbers: %d', o)
Product of odd numbers: 10395
DGM
DGM 2022-4-24
If you want to make things more complicated, you can:
n = 5; %input ("Input a number: ");
fprintf("\nOdd number: ");
i = 1;
while i <= n
fprintf("%d ",i);
i = i+2;
end
% and so on

类别

在 Help Center 和 File Exchange 中查找有关 Loops and Conditional Statements 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by