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59 lignes
1.2 KiB
59 lignes
1.2 KiB
#include "stdio.h"
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#include "stdlib.h"
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#include "time.h"
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#include "math.h"
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#include "string.h"
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/**
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* @brief generate a file consists of 50000 lines of words,
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* half line has a substring "computer", and is repeated.
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* the clone one is stripped of "computer".
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*
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* 0 ~ 9 : 48 ~ 57
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* a ~ z : 97 ~ 122
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*
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*/
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void file_create(const char *_addr)
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{
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FILE *file = fopen(_addr, "w");
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size_t line = 250000u;
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srand(time(NULL));
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// char *str = NULL;
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for (size_t i = 0; i < line; i++) {
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// str = (char *)malloc(abs(rand())%20 * sizeof(char));
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char str[abs(rand())%100+1];
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for (size_t j = 0; j < strlen(str); j++) {
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if (abs(rand()) % 2 == 0)
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str[j] = abs(rand())%10 + 48;
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else
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str[j] = abs(rand())%26 + 97;
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}
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strcat(str, "computer\n");
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fputs(str, file);
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fputs(str, file);
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// free(str);
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}
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fclose(file);
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}
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void file_show()
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{
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FILE *file = fopen("words.txt", "r");
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int ch;
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while ((ch = fgetc(file)) != '\n') {
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printf("%c", ch);
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}
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fclose(file);
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}
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int main()
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{
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file_create("words.txt");
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return 0;
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}
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