Question

C语言题目输入一行字符，分别统计出其中英文字母，空格，数字和其他字符的个数。

#include <stdio.h>
int main()
{
int letter=0,space=0,number=0,others=0;
char nextchar;
printf("Input your string\n");
for(;nextchar!='\n';)
{
scanf("%c",&nextchar);
if('a'<=nextchar<='z'||'A'<=nextchar<='Z')
letter++;
else if(nextchar==' ')
space++;
else if('0'<=nextchar<='9')
number++;
else
others++;
}
printf("letter=%d,space=%d,number=%d,others=%d\n",letter,space,number,others);
}

哪错啦

Answer 1

#include <stdio.h>

 void main ()

{char x;

    printf ("请输入一串字符\n");

• //scanf("%c",&x);     这一行应该去掉

    int letter=0,blank=0,number=0,other=0;

    while((x=getchar( ))!='\n')

    {

        if('a'<=x&&x<='z'||'A'<=x&&x<='Z')   

        letter++;

    else if(x==' ')

        blank++;

else if('0'<=x&&x<='9')     

   number++;

    else 

        other++;

    }

    printf("字母的个数%d,空格的个数%d,数字的个数%d,其他符号的个数%d",letter,blank,number,other);

}

这样应该可以了，你试试看。

Answer 2

#include<stdio.h>
void main()
{
char a[50];
int letter=0,number=0,blank=0,other=0,i;
gets(a);
for(i=0;a[i]!='\0';i++)
{
if((a[i]>='A'&&a[i]<='Z')||(a[i]>='a'&&a[i]<='z'))
letter++;
else if(a[i]>='0'&&a[i]<='9')
number++;
else if(a[i]==' ')
blank++;
else other++;
}
printf("letter=%d,number=%d,blank=%d,other=%d",letter,number,blank,other);
}

Answer 3

#include<stdio.h>
#define N 100
int main()
{
char a[N];
int i,m=0,n=0,b=0,c=0;
printf("Input a string:");
gets(a);
for(i=0;a[i]!='\0';i++)
{
if(a[i]>='a'&&a[i]<='z'||a[i]>='A'&&a[i]<='Z')
m++;
else if(a[i]>='0'&&a[i]<='9')
n++;
else if(a[i]==' ')
b++;
else
c++;
}
printf("英文字母:%d\n",m);
printf("数字字符：%d\n",n);
printf("空格：%d\n",b);
printf("其他字符：%d\n",c);
return 0;
}

Answer 4

a = '1355gdfg,45o 24tkl lwe4rt'
import string
#空格
x = a.count(' ')
import re
#字母
y = len(re.findall(r'[a-zA-Z]',a))
#数字
z = len(re.findall(r'[0-9]',a))
#其他
len(a) - x - y - z

Answer 5

非要限制输入的大小么？过会儿给你发个
#include <stdio.h>
#include <string>
void main(){
char m_input;
int digit=0,space=0,others=0,uppercase=0,lowercase=0;
printf("Please input string:");
while ((m_input=getchar())!='\n')
{
if (m_input>='a'&&m_input<='z')
lowercase++;
else if (m_input>='A'&&m_input<='Z')
uppercase++;
else if (m_input>'0'&&m_input<'9')
digit++;
else if (m_input==' ')
space++;
else
others++;
}
printf("lowercase:%d\t uppercase:%d\t digit:%d\t space:%d\t others:%d\n",lowercase,uppercase,digit,space,others);
}