C Programming

[Ishan]

HOW TO CREATE MY OWN
atoi() function.
pls give me the logic.
its urgent.

 

[kalpik]

One tip: The ASCII value of (char) '0' is (int) 48. So just make a loop and extract these values! Also remember that you have to do the units, tens, hundred math also!

int num=0;
for(i=0;i<strlen(string);i++)
{
num=num+(((int)string-48)*pow(10,i));
}

I think the above code should work!

 

[tuxfan]

HINT: switch case, while()/for() loop, if..else

Or are you expecting code?