atol function

The C library function int atol(const char *str) converts the string argument str to a long integer (type long). If no valid conversion could be performed, it returns zero. In most implementations, pasing a null pointer will cause a segementation fault. ^ Replaced by strtol

Library:   stdlib.h

Prototype: long atol(const char *str)


example program.

See also:

atof String to floating point conversion.

atoi String to integer conversion.

strtod String to double conversion.

strtol String to long integer conversion.

strtoul String to unsigned long integer conversion.

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Martin Leslie