求一个给定字符串中的字母的个数。

Question

#include <stdio.h>
int fun(char s[])
{
}
void main()
{ char str[]="Best wishes for you!";
int k;
k=fun(str);
printf("k=%d\n",k);
}

Answer 1

#include <stdio.h>
#include<ctype.h>
int fun(char s[])
{
    int count = 0, i=0;
    while (s[i])
    {
        if (isalpha(s[i]))
            count++;
        i++;
    }
    return count;
}
void main()
{
    char str[] = "Best wishes for you!";
    int k;
    k = fun(str);
    printf("k=%d\n", k);
}