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  1. #include <stdio.h>
  2. #include <ctype.h>
  3. #include <errno.h>
  4. #include <string.h>
  5. /** /
  6. int Chop_if(char str[],char ch){
  7. 	int i = 0;
  8. 	for (i = 0; str[i] != '\0'; i++);
  9. 	if (i > 0){
  10. 		if(str[i - 1] == ch) str[i - 1] = '\0';
  11. 	}
  12. 	else return -1;
  13. 	return 0;
  14. }
  15. /**/
  16. int StringToUpper(char str[]){//inplace modify.
  17. 	int i = 0;
  18. 	for (i = 0; str[i] != '\0'; i++) str[i] = toupper(str[i]);
  19. 	return 0;
  20. }
  21. /*
  22. int PrintValue(char str[]){
  23. 	int i = 0;
  24. 	for (i = 0; str[i] != '\0'; i++)printf("%d ",str[i]);
  25. 	return 0;
  26. }
  27. */
  28.  
  29. int main(){
  30.  
  31. 	static const int Len = 4;
  32. 	char buff[Len];
  33. #if 1	//can process both for problem.
  34. 	while (1){
  35. 		if (fgets(buff, Len, stdin) == NULL && errno != EINVAL) break;
  36. 		//Chop_if(buff,'\n');
  37. 		//Chop_if(buff,26);//value of eof at char value.but eof can get int value.
  38. 		StringToUpper(buff);
  39. 		printf("%s", buff);
  40. 		//PrintValue(buff);
  41. 	}
  42. #else
  43. 	int ch = EOF;
  44. 	while ((ch = getchar()) != EOF){//よく考えたら、stdinが詰まってるのでブロッキングしません！
  45. 		ch = toupper(ch);
  46. 		putc(ch, stdout);
  47. 		fflush(stdout);//>>192が正解！
  48. 	}
  49. #endif
  50. 	return 0;
  51. }
Success #stdin #stdout 0s 2296KB
comments (?)
stdin
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Hello World!!!
stdout
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HELLO WORLD!!!
https://ideone.com/cioPLo
language:
C (gcc 8.3)
created:
10 years ago
visibility:
public

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