atoi()                   Convert String to Integer
 
 #include <stdlib.h>
 
 int        atoi(string);                The integer value of string
 char       *string;                     String to be converted
 
    atoi() converts 'string' to an integer value.  atoi() does not
    recognize decimal points or exponents.  'string' has the following
    format:
 
                [whitespace][sign]digits
     where
            whitespace       any number of tab or space characters;
            sign             + or -
            digits           one or more decimal digits.
 
    Returns:    The integer value of 'string'.  If 'string' cannot be
                converted to an integer, 0 is returned.  The return value
                is undefined for overflow.
 
  -------------------------------- Example ---------------------------------
 
    The following statements convert a string to an integer and print the
    result.
 
         #include <stdio.h>
 
         char   *s;
         int    i;
 
         main()
         {
             s = "12345";
             i = atoi(s);
             printf("%d\n",i);
         }

Seealso:


 atof() 
 atol() 
 ecvt() 
 fcvt() 
 gcvt()