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  1. #include <stdio.h>
  2.  
  3. #define CHG_I2C I2C1
  4. #define GPIO_AF_I2C1 0x000
  5.  
  6. #define _CONCAT(a, b) a ##b
  7. #define CONCAT(a, b) _CONCAT(a, b)
  8.  
  9. int main()
  10. {
  11.     printf("%d\n", CONCAT(GPIO_AF_,CHG_I2C));
  12.     return 0;
  13. }
Success #stdin #stdout 0s 1832KB
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https://ideone.com/In8mPA
language:
C (gcc 8.3)
created:
10 years ago
visibility:
public

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