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  1. void main()
  2. {
  3. }
Compilation error #stdin compilation error #stdout 0s 0KB
stdin
Standard input is empty
compilation info
prog.c:1:6: error: return type of ‘main’ is not ‘int’ [-Werror=main]
 void main()
      ^~~~
cc1: all warnings being treated as errors
stdout
Standard output is empty