C问题,用FOR语句做: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.

#include <stdio.h>
#define MAXLINE 1000 /* maximum input line length */

int getline(char line[], int max)
int strindex(char source[], char searchfor[]);

char pattern[] = "ould"; /* pattern to search for */

/* find all lines matching pattern */
main()
{
char line[MAXLINE];
int found = 0;

while (getline(line, MAXLINE) > 0)
if (strindex(line, pattern) >= 0) {
printf("%s", line);
found++;
}
return found;
}

/* getline: get line into s, return length */
int getline(char s[], int lim)
{
int c, i;

i = 0;
while (--lim > 0 && (c=getchar()) != EOF && c != '\n')
s[i++] = c;
if (c == '\n')
s[i++] = c;
s[i