fork download
copy 
  1.     #include <stdio.h>
  2.  
  3.     // these macros rely on the fact that errorCode is defined in the the caller
  4.  
  5.     #define FUNC_RETURN_ISNT(func, unexpected) \
  6.         ((errorCode = func) == unexpected) ? printf("error: call %s shouldn't have returned %d but did (from function %s at line %d of file %s)\n", #func, unexpected, __func__, __LINE__, __FILE__), 0 : 1
  7.  
  8.     #define FUNC_RETURN_IS(func, expected) \
  9.         ((errorCode = func) != expected) ? printf("error: call %s returned %d instead of %d (from function %s at line %d of file %s)\n", #func, errorCode, expected, __func__, __LINE__, __FILE__), 0 : 1
  10.  
  11.     #define ERROR_CHECK(func) \
  12.         (errorCode = func) ? printf("error: call %s returned %d (from function %s at line %d of file %s)\n", #func, errorCode, __func__, __LINE__, __FILE__), errorCode : 0
  13.  
  14.     int func(int a, int b, int c)
  15.     {
  16.         return a^b^c;
  17.     }
  18.  
  19.     int func2(void)
  20.     {
  21.         return -1;
  22.     }
  23.  
  24.     int func3(void)
  25.     {
  26.        static int i = 3;
  27.  
  28.        return i--;
  29.     }
  30.  
  31.     int main(void)
  32.     {
  33.         int a = 0, b = 0, c = 0;
  34.         int errorCode;
  35.  
  36.         int (*funcPoint)(void) = func2;
  37.  
  38.         FUNC_RETURN_ISNT(func(1,1,1), 1);
  39.  
  40.         FUNC_RETURN_IS(func(a,b,c), 1);
  41.  
  42.         ERROR_CHECK(func(a,b,1));
  43.  
  44.         if(ERROR_CHECK(func2()))
  45.         {
  46.            printf("func2 failed error check\n");
  47.         }
  48.         else
  49.         {
  50.            printf("func2 passed error check\n");
  51.         }
  52.  
  53.         if(ERROR_CHECK(funcPoint()))
  54.         {
  55.            printf("funcPoint failed error check\n");
  56.         }
  57.         else
  58.         {
  59.            printf("funcPoint passed error check\n");
  60.         }
  61.  
  62.         if(ERROR_CHECK(func(0,0,0)))
  63.         {
  64.            printf("func failed error check\n");
  65.         }
  66.         else
  67.         {
  68.            printf("func passed error check\n");
  69.         }
  70.  
  71.         while(ERROR_CHECK(func3()))
  72.         {
  73.             printf("retry...\n");
  74.         }
  75.  
  76.         switch(ERROR_CHECK(func(1,2,4)))
  77.         {
  78.             case 0:
  79.                 printf("okay\n");
  80.                 break;
  81.             case 1:
  82.                 printf("non-fatal error 1\n");
  83.                 break;
  84.             case 7:
  85.                 printf("fatal error 7\n");
  86.                 return 1;
  87.         }
  88.  
  89.         return 0;
  90.     }
Runtime error #stdin #stdout 0s 1832KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
error: call func(1,1,1) shouldn't have returned 1 but did (from function main at line 38 of file prog.c)
error: call func(a,b,c) returned 0 instead of 1 (from function main at line 40 of file prog.c)
error: call func(a,b,1) returned 1 (from function main at line 42 of file prog.c)
error: call func2() returned -1 (from function main at line 44 of file prog.c)
func2 failed error check
error: call funcPoint() returned -1 (from function main at line 53 of file prog.c)
funcPoint failed error check
func passed error check
error: call func3() returned 3 (from function main at line 71 of file prog.c)
retry...
error: call func3() returned 2 (from function main at line 71 of file prog.c)
retry...
error: call func3() returned 1 (from function main at line 71 of file prog.c)
retry...
error: call func(1,2,4) returned 7 (from function main at line 76 of file prog.c)
fatal error 7
https://ideone.com/NG8U16
language:
C (gcc 8.3)
created:
10 years ago
visibility:
secret

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!