#include
#include
void swap(int c[],int len)
{
int i = 0;
int tmp;
for (; i < len; ++i,--len)
{
tmp = c[i];
c[i] = c[len];
c[len] = tmp;
}
}
int mul(char a[],char b[],int c[])
{
int c1,c2,i,k;
c1=strlen(a);
c2=strlen(b);
for(i=0;i