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  1. #include <stdio.h>
  2. void main() {
  3. 	int op;
  4. 	char ch;
  5. 	printf("1. Lower to Upper\n2. Upper to Lower\n");
  6. 	printf("Option: ");
  7. 	scanf("%d", &op);
  8. 	printf("Character: \n");
  9. 	scanf("%c",&ch);
  10. 	switch(op){
  11. 		case 1:
  12. 	if(ch>= 'a' && ch<='z'){
  13. 		printf("Upper: %c\n",ch);
  14. 	}else{
  15. 		printf("Not lower\n");
  16. 	}
  17. 		break;
  18. 		case 2:
  19. 		if(ch>= 'A' && ch<='Z'){
  20. 			printf("Lower: %c\n",ch+32);
  21. 		}else{
  22. 			printf("Not Upper\n");
  23. 		}
  24. 		break;
  25. 		default:
  26. 		printf("Invalid\n");
  27. 		break;
  28. 	}
  29.  
  30.  
  31. }
Success #stdin #stdout 0.04s 25540KB
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#include <stdio.h>
void main() {
	int op;
	char ch;
	printf("1. Lower to Upper\n2. Upper to Lower\n");
	printf("Option: ");
	scanf("%d", &op);
	printf("Character: \n");
	scanf("%c",&ch);
	switch(op){
		case 1:
	if(ch>= 'a' && ch<='z'){
		printf("Upper: %c\n",ch);
	}else{
		printf("Not lower\n");
	}
		break;
		case 2:
		if(ch>= 'A' && ch<='Z'){
			printf("Lower: %c\n",ch+32);
		}else{
			printf("Not Upper\n");
		}
		break;
		default:
		printf("Invalid\n");
		break;
	}
	
	
}
https://ideone.com/GviITk
language:
PHP (php 7.3.5)
created:
3 days ago
visibility:
public

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