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  1. #include <stdio.h>
  2.  
  3. int main( void )
  4. {
  5.     if ( int a = 1 )
  6.     {
  7.         /* error
  8.         int a = 2;
  9.         */
  10.         printf( "a = %d\n", a );
  11.     }
  12.     /* error
  13.     printf( "a = %d\n", a );
  14.     */
  15.  
  16.     for ( int i=0; i<1; ++i )
  17.     {
  18.         /* error
  19.         int i = 10;
  20.         */
  21.         printf( "i = %d\n", i );
  22.     }
  23.     /* error
  24.     printf( "i = %d\n", i );
  25.     */
  26.  
  27.     while ( bool b = false )
  28.     {
  29.         /* error
  30.         bool b = true;
  31.         */
  32.         printf( "b = %s\n", b ? "true" : "false" );
  33.     }
  34.     /* error
  35.     printf( "b = %s\n", b ? "true" : "false" );
  36.     */
  37.  
  38.     /* error
  39.     do
  40.     {
  41.         printf( "b = %s\n", b ? "true" : "false" );
  42.     } while ( bool b = false );
  43.     */
  44.     /* error
  45.     do
  46.     {
  47.         bool b = false;
  48.         printf( "b = %s\n", b ? "true" : "false" );
  49.     } while ( b );
  50.     */
  51.     {
  52.         bool b = false;
  53.         do
  54.         {
  55.             bool b = true;
  56.             printf( "b = %s\n", b ? "true" : "false" );
  57.         } while ( b ); // b == false
  58.     }
  59.     {
  60.         switch ( int c = 99 )
  61.         {
  62.             case 99: // fall
  63.             case 0: { printf( "c = %d ; ", c ); int c = 0; printf( "c = %d\n", c ); } // fall
  64.             case 1: { printf( "c = %d ; ", c ); int c = 1; printf( "c = %d\n", c ); } // fall
  65.             case 2: { printf( "c = %d ; ", c ); int c = 2; printf( "c = %d\n", c ); } // fall
  66.         }
  67.         /* error
  68.         printf( "c = %d\n", c );
  69.         */
  70.     }
  71.     {
  72.         switch ( int c = 99 )
  73.         {
  74.             case 99: // fall
  75.             case 0: printf( "c = %d ; ", c ); /*error int c = 0;*/ printf( "c = %d\n", c ); // fall
  76.             case 1: printf( "c = %d ; ", c ); /*error int c = 1;*/ printf( "c = %d\n", c ); // fall
  77.             case 2: printf( "c = %d ; ", c ); /*error int c = 2;*/ printf( "c = %d\n", c ); // fall
  78.         }
  79.     }
  80.     {
  81.         switch ( int c = 99 )
  82.         {
  83.             case 99: // fall
  84.             case 0: { printf( "c = %d ; ", c );         int c = 0;   printf( "c = %d\n", c ); } // fall
  85.             case 1:   printf( "c = %d ; ", c ); /*error int c = 1;*/ printf( "c = %d\n", c );   // fall
  86.             case 2:   printf( "c = %d ; ", c ); /*error int c = 2;*/ printf( "c = %d\n", c );   // fall
  87.         }
  88.     }
  89.     {
  90.         /* error
  91.         int c = 2;
  92.         switch ( c )
  93.         {
  94.             case 1: { int c2 = 77; // fall
  95.             case 2: printf( "c2 = %d ; ", c2 ); }
  96.         }
  97.         */
  98.         int c = 2;
  99.         switch ( c )
  100.         {
  101.             case 1: { // fall
  102.             case 2: printf( "c = %d ; ", c ); }
  103.         }
  104.         switch ( int c = 99 )
  105.         {
  106.             {
  107.                 case 1: // fall
  108.                 case 2: printf( "c = %d ; ", c );
  109.             }
  110.         }
  111.     }
  112.     return 0;
  113. }
Success #stdin #stdout 0s 2852KB
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stdin
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Standard input is empty
stdout
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a = 1
i = 0
b = true
c = 99 ; c = 0
c = 99 ; c = 1
c = 99 ; c = 2
c = 99 ; c = 99
c = 99 ; c = 99
c = 99 ; c = 99
c = 99 ; c = 0
c = 99 ; c = 99
c = 99 ; c = 99
c = 2 ;
https://ideone.com/GJO3u6
language:
C++ (gcc 8.3)
created:
10 years ago
visibility:
secret

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