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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. #define FILENAME "book-6.dat"
  5.  
  6. int goukei(int kurikoshikin, FILE *fp);
  7.  
  8. int main(void)
  9. {
  10. 	FILE *fp;
  11. 	int kurikoshikin;
  12. 	char YesOrNo = 'n';
  13. 	fp = fopen(FILENAME, "r");
  14.  
  15. 	if (fp == NULL) {
  16. 		fprintf(stderr, "%s is not found!\n", FILENAME);
  17. 		exit(1);
  18. 	}
  19. 	do {
  20. 		printf("Input kurikoshikin > ");
  21. 		scanf("%d%*c", &kurikoshikin);
  22. 		printf("OK? ('y' or 'n') > ");
  23. 		scanf("%c%*c", &YesOrNo);
  24. 	} while (YesOrNo != 'y');
  25.  
  26. 	printf("zandaka = %d\n" , goukei(kurikoshikin, fp));
  27. 	fclose(fp);
  28.  
  29. 	return 0;
  30. }
  31.  
  32. int goukei(int kurikoshikin, FILE *fp)
  33. {
  34. 	int sum = 0,tanka,suryou;
  35. 	char syouhin[50];
  36. 	char data[60];
  37. 	int in_out_flag;
  38.  
  39. 	sum = kurikoshikin;
  40.  
  41. 	while (fscanf(fp, "%s%d%s%d%d", data, &in_out_flag, syouhin, &tanka, &suryou) == 5) {
  42. 		if (in_out_flag == 0) {
  43. 			sum += tanka * suryou;
  44. 		} else {
  45. 			sum -= tanka * suryou;
  46. 		}
  47. 	}
  48. 	return sum;
  49. }
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https://ideone.com/tnkGT
language:
C (gcc 8.3)
created:
12 years ago
visibility:
public

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