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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	int a = 10;			// Original value
  5. 	int* ptr = &a;		// Point to the memory address of integer "a"
  6.  
  7. 	// Print out original value
  8. 	printf("The value is: %d\n", a);
  9.  
  10. 	// Update value of integer "a" using pointer "ptr".
  11. 	printf("Updating value using pointer.\n");
  12. 	*ptr = 20;
  13.  
  14. 	// Print out updated value
  15. 	printf("The value is: %d\n", a);
  16.  
  17. 	return 0;
  18. }
  19.  
Success #stdin #stdout 0s 2052KB
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stdin
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Standard input is empty
stdout
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The value is: 10
Updating value using pointer.
The value is: 20
https://ideone.com/CTYroc
language:
C (gcc 8.3)
created:
9 years ago
visibility:
public

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