91. void fun(int a,int b,long *c)
{*c=(a%10)*1000+(b%10)*100+(a/10)*10+b/10;}

92.double fun(int m)
{int i;
double s=0.0,log(double x);
for(i=1;i s=s+log(i);
s=sqrt(s);
return s;}

93. double fun(double x,int n)
{double s=1.0,p=1.0;
int i,j,t;
for(i=1;j<=i;j++)
{t=1;
for(j=1;j<=n;i++)
t=t*j;
p=p*x;
s=s+p/t;}
return s;}

94. void fun(char *a)
{int i=0;
char *p=a;
while(*p&*p==’*’)
p++;
while(*p)
{a=*p;
i++;
p++;}
a=’\0’;}