int Sum(int n)
{
if (n <= 0) printf("data error\n");
if (n == 1)_________________;
else return ____________________;
} 
#include
int Fun(int n)
{ if (n==1) return 1;
else return Fun(n-1)+1;
}
int main()
{
int i,j=0;
for(i=1;i<3;i++) j+=Fun(i);
printf("%d\n",j);
return 0;
} 
#include
float Fun(int x,int y)
{
return(x+y);
}
int main()
{
int a=2,b=5,c=8;
printf("%3.0f\n",Fun((int)Fun(a+c,b),a-c));
return 0;
}
double Y(double x, int n)
{
if (n == 0) return 0;
else return (square(x +___________________));
} 
int Gcd(int a, int b)
{
if (a%b == 0)
return b;
else
return ____________________;
}
long Fact(int n)
{
if (n < 0) return 0;
if (n==1 || n==0) __________________;
else ____________________;
} 
#include
char Fun(char x , char y)
{
if(__________) return y;
else return x;
}
int main( )
{
char a='9',b='8',c='7';
printf("____",Fun(_______________));
return 0;
}
" />#include
float Fun(int x,int y)
{
return(x+y);
}
int main()
{
int a=2,b=5,c=8;
printf("%3.0f\n",Fun((int)Fun(a+c,b),a-c));
return 0;
}
" />int Sum(int n)
{
if (n <= 0) printf("data error\n");
if (n == 1)_________________;
else return ____________________;
} 
long Fact(int n)
{
if (n < 0) return 0;
if (n==1 || n==0) __________________;
else ____________________;
} 
double Y(double x, int n)
{
if (n == 0) return 0;
else return (square(x +___________________));
} 
#include
int Fun(int n)
{ if (n==1) return 1;
else return Fun(n-1)+1;
}
int main()
{
int i,j=0;
for(i=1;i<3;i++) j+=Fun(i);
printf("%d\n",j);
return 0;
}
#include
char Fun(char x , char y)
{
if(__________) return y;
else return x;
}
int main( )
{
char a='9',b='8',c='7';
printf("____",Fun(_______________));
return 0;
}
" />#include
int Fun(int a, int b)
{
if(a>b) return_________;
else return________;
}
int main()
{
int x=3, y=8, z=6, r;
r=_______________; // 找到三个整数x,y,z中的最大值
printf("%d", r);
return 0;
}