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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. int main(void) {
  4. 	// your code goes here
  5. 	int a = 1;
  6. 	int *ptr = &a;
  7.  
  8. 	/*Print the address pointed to*/
  9. 	printf("pointing to address:  %p\n", ptr );
  10.  
  11. 	/*Print the value in address*/
  12. 	printf("Value:  %d\n", *ptr );
  13.  
  14. 	/*Print ptr's addressf*/
  15. 	printf("Value:  %p\n", &ptr );
  16.  
  17. 	*ptr = 5;
  18. 	printf("Value:  %d\n", a );
  19.  
  20. 	ptr = NULL;
  21.  
  22. 	// ERROR
  23. 	/*Print the value pointed to by ptr*/
  24. 	// printf("Value:  %d\n", *ptr );
  25.  
  26. 	a = 2;
  27. 	printf("Value:  %d\n", a );
  28. 	printf("Value:  %d\n", sizeof(int) );
  29. 	return EXIT_SUCCESS;
  30. }
  31.  
Success #stdin #stdout 0s 4280KB
comments (?)
stdin
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Standard input is empty
stdout
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pointing to address:  0x7ffea18ae35c
Value:  1
Value:  0x7ffea18ae360
Value:  5
Value:  2
Value:  4
https://ideone.com/IPG59U
language:
C (gcc 8.3)
created:
3 years ago
visibility:
public

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