View Code of Problem 50

# include<stdio.h>
# include<string.h>
int main(void)
{
  int len,i,j=0,flag=0;
  char a[80],b[80];
  gets(a);
  len = strlen(a);
  for(i=0;i<len;++i)
  {
    if(a[i]>='0'&&a[i]<='9')
    {
      b[j] = a[i];
      flag = 0;
    }
    else if(a[i]<'0'||a[i]>'9')
    {
      b[j] = '*';
      ++flag;
    }
    if(flag==0||flag==1)
    {
        ++j;
    }
  }
  for(i=0;i<j;++i)
  {
      printf("%c",b[i]);
  }
  return 0;
}