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#include <stdio.h>
int f1(int x);
int f2(int x)
{
if(x==1) return 0;
f1(x-1);
}
int f1(int x)
{
if(x==1) return 0;
f2(x-1);
}
int f(int x)
{
if(x==0) return 0;
if(x==1) return 1;
return f(x-1)+f(x-2);
}
int main()
{
char *s;
s = (char *)malloc(50);
(void)strlcpy(s,"hello, ",50);
(void)strlcat(s,"world",50);
putstring(s);
putnl();
free(s);
putint(f(10));
putnl();
putint(f1(10));
putnl();
return 0;
}
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