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  1. #include <stdio.h>
  2. #include <string.h>
  3.  
  4. int main(void) {
  5. 	char input[10000];
  6. 	char output[10000];
  7. 	fgets(input, 1000, stdin);
  8. 	int index = 0;
  9. 	int space = 0;
  10.  
  11. 	while(input[index++] == ' ');
  12. 	index--;
  13.  
  14. 	int end = strlen(input) - 1;
  15. 	while(input[end] == ' '){
  16. 		input[end--] = '\0';
  17. 	}
  18.  
  19. 	while(input[index] != '\0' && input[index] != '\n' && input[index] != '\r'){
  20. 		if(input[index] == ' '){
  21. 			if(space == 0){
  22. 				space = 1;
  23. 				printf("%c", input[index]);
  24. 			}
  25. 		}
  26. 		else{
  27. 			space = 0;
  28. 			printf("%c", input[index]);
  29. 		}
  30. 		index++;
  31. 	}
  32. 	return 0;
  33. }
  34.  
Success #stdin #stdout 0.01s 5320KB
comments (?)
stdin 
    Hello   world   from  C
stdout 
Hello world from C
https://ideone.com/nBW00E
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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