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  1. #include <stdio.h>
  2.  
  3.         /*    GLOBAL, AUTO, and STATIC VARIABLE DECLARATION EXAMPLE */
  4.  
  5.         int globalvar = 2;    /* global variable is initialized only once */
  6.                               /* and its value is always held in memory   */
  7.  
  8.         void printit()
  9.         {   
  10.                static int staticvar = 2;  /* intialized only once, but since it is static */
  11.                                            /* it value is always held in memory.           */
  12.  
  13.                 int autovar = 2;          /* local variable within printit */
  14.  
  15.                 globalvar++;
  16.                 staticvar++;
  17.                 autovar++;
  18.  
  19.                 /* Time line 2 */
  20.  
  21.                 printf("globalvar = %d \n",   globalvar);
  22.                 printf("staticvar = %d \n",   staticvar);
  23.                 printf("autovar   = %d \n\n", autovar); 
  24.  
  25.        } /* printit */
  26.  
  27.         int main()
  28.        {
  29.  
  30.                 int x;    /* local variable within main */    
  31.  
  32.                /* Time line 1 */
  33.  
  34.                /* Call printit function three times */
  35.                 printit();
  36.                 printit();
  37.                printit();
  38.  
  39.                 x = 5;
  40.  
  41.                 /* Time Line 3 */
  42.                return(0);
  43.  
  44.         } /* main */
Success #stdin #stdout 0s 5424KB
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stdin
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Standard input is empty
stdout
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globalvar = 3 
staticvar = 3 
autovar   = 3 

globalvar = 4 
staticvar = 4 
autovar   = 3 

globalvar = 5 
staticvar = 5 
autovar   = 3
https://ideone.com/PksqcB
language:
C++ (gcc 8.3)
created:
1 year ago
visibility:
public

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