Question

I have an Array as (filled with zeros and ones) -> ArrayWithContent[5] = {1,0,0,1,1};
Now I want this to be converted into an variable so I can read out the total value of this.

0001 0011 = 19

for(i=0; i<5; i++)
{
    OneValue = ArrayWithContent[i]; 
    Variable = OneValue;
    Variable >>= 1;             // Send the zero or one to right.... continue to fill it up
}

Display Content of Variable I now want it to show the value 19.

I know I does this wrong, what is the correct way? Pointers and Addresses?

Answer 1

Variable = 0;
for (i = 0; i < 5; i++)
{
    Variable = (Variable << 1) | ArrayWithContent[i];
}

Here:

• (Variable << 1) shifts the current value of Variable one bit to the left.
• ... | ArrayWithContent[i] replaces the least-significant bit of the shifted value with ArrayWithContent[i].
• Finally, Variable = ... assigns the result back to Variable.