Question

c语言如何判断输入是数字串还是字符串

Answer 1

 可以参考如下代码：

  #include<stdio.h>
  double uniform(double,double,long int *);
  main()
  {
     double a,b,x;
         int i,j;
         long int s;
         a=0.0;b=1.0;s=13579;
         for(i=0;i<10;i++)
          {
              for(j=0;j<5;j++)
              {
                     x=uniform(a,b,&s);
                         printf("%13.7f",x);
           }
          printf("\n");
       }
}
double uniform(double a,double b ,long int *seed)
{
   double t;
     *seed=2045*(*seed)+1;
         *seed=*seed-(*seed/1048576)*1048576;
         t=(*seed)/1048576.0;
         t=a+(b-a)*t;
         return (t);
}

Answer 2

对输入进行判断ASC码值，不同数值不同数字或是字符