51 lines
840 B
C
51 lines
840 B
C
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include <unistd.h>
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#include <string.h>
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#define MAX_LINES 200
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#define LINEBUF 1024
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int main() {
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char* lines[MAX_LINES];
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int n = 0;
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char buf[LINEBUF];
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char* line;
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int len;
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//Read first line
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line = fgets(buf, LINEBUF, stdin);
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while(line != NULL && n < MAX_LINES) {
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//Get len of line
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len = strlen(line);
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//Create space for line
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char* linecpy = malloc(len+1);
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//Copy line
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strcpy(linecpy,line);
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//Add line to array.
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lines[n++] = linecpy;
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//Read next line
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line = fgets(buf, LINEBUF, stdin);
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}
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if(n > 0) {
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//Prepare random seed
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srand(time(NULL)*getpid());
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//Generate random number
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int r = rand() % n;
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//Print random line
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fputs(lines[r],stdout);
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//Free all lines.
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int i;
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for(i = 0; i < n; i++) {
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free(lines[i]);
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}
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}
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return 0;
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}
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