/ ************************************************************************ * * Purpose: Program to demonstrate functions that have a variable * number of parameters. * Author: M J Leslie. * Date: 28-Mar-94 * ************************************************************************/ #include <stdio.h> #include <stdarg.h> /* va_list, va_arg, va_end */ int set(char *item, int num, ...); /* Declare the function. */ /************************************************************************/ main() { char *item="pear"; int Ret; Ret = set (item,4, "apple", "pear", "banana", "grape"); if (Ret) { printf ("%s found\n", item); } else { printf("%s not found\n", item); } } /************************************************************************/ int set(char *item, int num, ...) { va_list ap; /* define 'ap' It acts as a * pointer to the undefined * variables. */ int Ret=0; int Inc=0; /* Assume the worst. */ va_start(ap, num); /* seed 'ap' */ do { if ( item == va_arg(ap, char *)) { Ret = 1; } } while ( Ret==0 && ++Inc < num); va_end(ap); /* tidy up. */ return (Ret); }
file: /Techref/language/ccpp/Cref/EXAMPLES/var_func.c, 1KB, , updated: 1998/4/4 23:21, local time: 2024/8/23 08:45,
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