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  1. #include <stdio.h>
  2. #include <malloc.h>
  3. #include <stdlib.h>
  4. int main()
  5. {
  6. 	FILE *fp;
  7. 	char ***ch;
  8. 	int n,m, i,j; // char 最多到 128, 改成 int 可應付大數字
  9. 	char line[10];
  10. 	if((fp=fopen("水果.txt", "r"))==NULL)
  11. 	{
  12. 		printf("無法開啟檔案");
  13. 		return 1; //exit(1);
  14. 	}
  15.  
  16. //（比如說我輸入３，出現三個水果名字直到程式結束）
  17. 	printf("請輸入每行水果個數 M: ");
  18. 	scanf("%d", &m);
  19. 	for(n=0; NULL != (fgets(line, sizeof(line), fp)); n++); // 讀總共有個水果 n
  20. 	fseek(fp, 0, SEEK_SET); // 重回檔頭
  21. 	n /= m; //共有幾行
  22.  
  23. 	ch = (char***) malloc(sizeof(char**) * n);
  24. 	for (i = 0; i < n; i++) { 
  25. 		ch[i] = (char**) malloc(sizeof(char*) * m);
  26. 		for (j = 0; j < m; ++j)
  27. 			ch[i][j] = (char*) malloc(sizeof(char)*5);
  28. 	}
  29.  
  30. 	for (i = 0; i < n; i++){ 
  31. 	for (j = 0; j < m; j++) {
  32. 		fscanf(fp, "%s\n", ch[i][j]);
  33. 	}}
  34. 	fclose(fp);
  35.  
  36. 	for (i = 0; i < n; i++) {
  37. 	for (j = 0; j < m; ++j) printf("%s ", ch[i][j]);
  38. 		printf("\n");
  39. 	}
  40.  
  41. 	// free
  42. 	for (i = 0; i < n; i++) { 
  43. 	for (j = 0; j < m; ++j) free(ch[i][j]);
  44. 		free(ch[i]);
  45. 	}
  46. 	free(ch);
  47.  
  48. 	system("pause");
  49. 	return 0;
  50. }
Runtime error #stdin #stdout 0s 2380KB
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Standard input is empty
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無法開啟檔案
https://ideone.com/q0g1IV
language:
C (gcc 8.3)
created:
10 years ago
visibility:
public

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