view CbC-examples/fact-a.c @ 158:494b0b89df80 default tip

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author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Mon, 25 May 2020 18:13:55 +0900
parents 365b84b6fe04
children
line wrap: on
line source

#define __environment _CbC_environment
#define __return _CbC_return

#include "stdio.h"

__code factorial(int n,int result,int orig,__code(*print)(),__code(*exit1)(), void *exit1env)
{
    if (n<0) {
	printf("#0008:err %d!\n",n);
	goto (*exit1)(0,exit1env);
    }
    if (n==0)
	goto (*print)(n,result,orig,print,exit1,exit1env);
    else {
	result *= n;
	n--;
	goto factorial(n,result,orig,print,exit1,exit1env);
    }
}

__code print(int n,int result,int orig,__code(*print)(),__code (*exit1)(),void*exit1env);

int main( int ac, char *av[])
{
    int n;
    // n = atoi(av[1]);
    n = 10;
    goto factorial(n,1,n,print,__return,__environment);
}

__code print(int n,int result,int orig,__code(*print)(),__code (*exit1)(),void*exit1env)
{
    printf("#0032:%d! = %d\n",orig, result);
    goto (*exit1)(0,exit1env);
}