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atol() Convert String to Long
include <stdlib.h>
long atol(string); Value of string, converted to long
char *string; String to be converted
atol() converts 'string' to a long integer value. atol() does not
recognize decimal points or exponents. 'string' has the following
format:
[whitespace][sign]digits
whitespace any number of tab or space characters
sign + or -
digits one or more decimal digits.
Returns: The long value of 'string'. If 'string' cannot be
converted to a long value, 0 is returned. The return
value is undefined for overflow.
-------------------------------- Example ---------------------------------
The following statements convert a string to a long value and print
the result.
#include <stdlib.h>
long l;
char *s;
main()
{
s = "98765";
l = atol(s);
printf("%ld\n",l);
}
See Also:
atoi()
atof()
ecvt()
fcvt()
gcvt()
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