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  1. #include <stdio.h>
  2. void f(double (*)[3]);
  3. double a = 7.5;
  4.  
  5. int main()
  6. {
  7.    double* b = &a;
  8.    f(&b);
  9.    printf("a = %lf\n", a);
  10.    return 0;
  11.  
  12. }
  13. void f(double (*hi)[3])
  14. {
  15.    double **sth = (double **) hi;\
  16.    *(*sth) = 1;
  17.  
  18. }
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
prog.c: In function 'main':
prog.c:8:6: error: passing argument 1 of 'f' from incompatible pointer type [-Werror=incompatible-pointer-types]
    f(&b);
      ^
prog.c:2:6: note: expected 'double (*)[3]' but argument is of type 'double **'
 void f(double (*)[3]);
      ^
cc1: all warnings being treated as errors
stdout
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Standard output is empty
https://ideone.com/mueyCU
language:
C99 (gcc 8.3)
created:
10 years ago
visibility:
public

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