foo.c:2:25: error: expected ';', ',' or ')' before '&' token
    2 | void divide(int num,int &j)
      |                         ^
foo.c: In function 'main':
foo.c:27:17: warning: implicit declaration of function 'divide' [-Wimplicit-function-declaration]
   27 |                 divide(a[m],&j);
      |                 ^~~~~~

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