[Solved] Getting error: expected ‘{’ before ‘(’ token [closed]

by


Notice the extra {

void union{(int a, int b,int *p)
          ^

NOTE: This answer was posted before the OP edited the question to remove the typo (mentioned in this answer). Check the edits for clarity.

ANOTHER NOTE:
Use the standard definition of main()

int main(void) //if no command line arguments.

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solved Getting error: expected ‘{’ before ‘(’ token [closed]