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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. int StringToUpper(char str[]){//inplace modify.
  16. 	int i = 0;
  17. 	for (i = 0; str[i] != '\0'; i++) str[i] = toupper(str[i]);
  18. 	return 0;
  19. }
  20. /*
  21. int PrintValue(char str[]){
  22. 	int i = 0;
  23. 	for (i = 0; str[i] != '\0'; i++)printf("%d ",str[i]);
  24. 	return 0;
  25. }
  26. */
  27.  
  28. int main(){
  29.  
  30. 	char buff[1024];
  31.  
  32. 	while (1){
  33. 		if (fgets(buff, 1024, stdin) == NULL && errno != EINVAL) break;
  34. 		Chop_if(buff,'\n');
  35. 		Chop_if(buff,26);//value of eof at char value.but eof can get int value.
  36. 		Chop_if(buff,-1);//value of eof at command prompt.this is spooky value??
  37. 		StringToUpper(buff);
  38. 		printf("%s", buff);
  39. 		//PrintValue(buff);
  40. 	}
  41. 	/*int ch = EOF;
  42. 	while ((ch = getchar()) != EOF){
  43. 		ch = toupper(ch);
  44. 		putc(ch, stdout);
  45. 	}
  46. 	*/
  47. 	return 0;
  48. }
Success #stdin #stdout 0s 2296KB
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stdin
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hello world!! ^z
stdout
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HELLO WORLD!! ^Z
https://ideone.com/0ByfHI
language:
C (gcc 8.3)
created:
10 years ago
visibility:
public

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