程序代码：

main()
{
  char c;
  int z=0,k=0,s=0,q=0;
  while ((c=getchar())!='\n')
  {
    if (c>='a'&&c<='z'||c>='A'&&C<='Z')
        z++;
    else
        if (c==' ')
            k++;
        else
            if (c>='0'&&c<='9')
                s++;
            else
                q++;

  }
  printf("z=%d k=%d s=%d q=%d",z,k,s,q);
}

程序代码：

#include<stdio.h>
int main()
{  //Local  declarations
  char c;
  int z=0;
  int k=0;
  int s=0;
  int q=0; 
  //statements
  while ((c=getchar())!='\n')
  {
    if (c>='a'&&c<='z'||c>='A'&&c<='Z')
        z++;
    else if  (c==' ')
            k++;
    else if (c>='0'&&c<='9')
             s++;
       else
            q++;

  }
  printf("z=%d k=%d s=%d q=%d",z,k,s,q);
   
  return  0;
} //main