String to Integer

[aagaa]

I have a basic knowledge of c++, but I haven't done any real programming for a couple years or so. I know there's a function that can convert strings to integers, but I can't remember what it is...so, I'd appreciate it if someone could tell me this and/or direct me to a database with several commands and descriptions of their uses.

Just to give you an idea of what I'm trying to do, I'm trying to program myself a calculator to convert between hex, binary, and decimal. I know there are many available ones, but I'm trying to get back into programming a bit, and I figured this could be a good start. If there's a better way to convert between number bases, then I'd be open to suggestions for that too. Thanks

 

[Leibnitz]

Try to use the function "atoi".
with it you can convert a string to an int.
And you can also make some base coversion with it to.

 

[fheyn]

'cause you also want to use HEX you could make it more general :
with "101" (decimal) do : 1 + 0*10 + 1*10*10
with "101" (hex) do : 1 + 0*16 + 1*16*16
with "101" (binary) do : 1 + 0*2 + 1*2*2

scan the string and interpret (not convert, 'cause "1A2F" won't do) char by char from right to left, then use the
formula from above.