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  1. /*
  2.       globa/local/nested declarations and their scope
  3. */
  4.  
  5. #include <stdio.h>
  6.  
  7. int i = 1000;
  8.  
  9. void change()
  10. {
  11.     i = 10000;
  12.     printf("change: i = %4d\n", i);
  13. }
  14.  
  15. void display()
  16. {
  17.     printf("display: i = %4d\n", i);
  18. }
  19.  
  20. int main()
  21. {
  22.  
  23.   printf(" i = %4d\n", i);
  24.  
  25.   int i = 100;
  26.   printf(" i = %4d\n", i);
  27.  
  28.   {
  29. 	int i = 10;
  30.   	printf(" i = %4d\n", i);
  31.   }
  32.  
  33.   display();
  34.  
  35.   change();
  36.  
  37.   display();
  38.  
  39.   printf(" i = %4d\n", i);
  40.  
  41.   i = 1;
  42.  
  43.   printf(" i = %4d\n", i);
  44.  
  45.   display();
  46.  
  47. }
  48.  
  49.  
  50.  
  51.  
  52.  
  53.  
  54.  
  55.  
  56.  
Success #stdin #stdout 0s 5284KB
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stdin
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17
stdout
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 i = 1000
 i =  100
 i =   10
display: i = 1000
change: i = 10000
display: i = 10000
 i =  100
 i =    1
display: i = 10000
https://ideone.com/3KB3Bp
language:
C (gcc 8.3)
created:
2 hours ago
visibility:
public

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