for loop in C/C++

I have for开发者_如何学Go loop doubt that I need to ask .

once i saw in coding something like

for(i = 0; i<10; i+)     

My doubt is why &when in for loop we use say i+ or i- rather than i++ or i--

Thanks in advance

It won't work, doesn't the compiler return an error if you do? ( or atleast a warning.. )

Just use ++i or i++

Using i+ instead of i++ should not work. As I think you know, i++ increases the value of i by one. When the compiler sees i+, it is expecting something after the +, which causes it to not compile.

The line in question is not valid C

for(i = 0; i<10; i+)

Some valid, equivalent (between themselves) options are

for(i = 0; i < 10; i++)
for(i = 0; i < 10; ++i)
for(i = 0; i < 10; i += 1)
for(i = 0; i < 10; ) { /*...*/ i++; }

You cannot use i+ or i- because if doesn’t work i.e doesn’t increase or decrease value of i for increment you have may use i++,++i,i+=1,i=i+1 and for decrement you can use these by changing sign to negtive