//输入一行字符,分别统计其中英文字母,空格,数字,和其他字符的个数。
//程序分析:利于while()语句,条件为输入字符不为“\n”
#include<stdio.h>
main()
{
char c;
int letters=0,space=0,digit=0,others=0;
printf("please input some character\n");
while((c=getchar())!='\n')
{
if (c>='a'&&c<='z'||c>='A'&&c<='Z')
letters++;
else if(c==' ')
space++;
else if(c>='0'&&c<='9')
digit++;
else
others;
//程序分析:利于while()语句,条件为输入字符不为“\n”
#include<stdio.h>
main()
{
char c;
int letters=0,space=0,digit=0,others=0;
printf("please input some character\n");
while((c=getchar())!='\n')
{
if (c>='a'&&c<='z'||c>='A'&&c<='Z')
letters++;
else if(c==' ')
space++;
else if(c>='0'&&c<='9')
digit++;
else
others;
}
printf("all in all:char=%d space=%d digit=%d\n others=%d\n",letters,space,digit,others);
return 0;
printf("all in all:char=%d space=%d digit=%d\n others=%d\n",letters,space,digit,others);
return 0;
}