For loops and Arduinod

We need loops to repeat one action multiple times.
Syntax:

for(variable, which we will change; condition; change variable)
{
  //code to repeat
}

Example:

int a=0;
for(int i=0; i<10; i++)
{
  a=a+1;
}

This code will add to a '1' 10 times, so at the end of our loop a will be equal '10'.