1006. 换个格式输出整数 (15)

#include <stdio.h>
#include <math.h>

int main()
{
int n;
int weishu=1,i,j;

scanf("%d",&n);
while ( n/(int)pow(10.0,weishu) )
weishu++;
if (weishu == 1)
{
for (i=1;i<=n;i++)
printf("%d",i);
}
else if (weishu == 2)
{
j = n/10;
for (i=1;i<=j;i++)
printf("S");
j = n%10;
for (i=1;i<=j;i++)
printf("%d",i);
}
else
{
j = n/100;
for (i=1;i<=j;i++)
printf("B");
j = (n/10)%10;
for (i=1;i<=j;i++)
printf("S");
j = n%10;
for(i=1;i<=j;i++)
printf("%d",i);
}

return 0;
}