59 lines
1.0 KiB
C
59 lines
1.0 KiB
C
#include <stdio.h>
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#define MAXLINE 1000 /* maximum input line size */
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int max; /* maximum length seen so far */
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char line[MAXLINE]; /* current input line */
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char longest[MAXLINE]; /* longest line saved here */
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int my_getline(void);
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void copy(void);
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/* print longest input line; specialized version -> worse, less general */
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main()
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{
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int len;
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extern int max;
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extern char longest[];
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max = 0;
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while ((len=my_getline()) > 0)
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if (len > max) {
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max = len;
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copy();
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}
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if (max > 0) /* there was a line */
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printf("%s", longest);
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return 0;
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}
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/* getline: specialized version */
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int my_getline(void)
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{
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int c, i;
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extern char line[];
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for (i = 0; i < MAXLINE-1 && (c=getchar()) != EOF && c != '\n'; ++i)
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line[i] = c;
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if (c == '\n') {
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line[i] = c;
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++i;
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}
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line[i] = '\0';
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return i;
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}
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/* copy: specialized version */
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void copy(void)
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{
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int i;
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extern char line[], longest[];
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i = 0;
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while ((longest[i] = line[i]) != '\0')
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++i;
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}
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