foo.c: In function 'main':
foo.c:5:14: error: expected ')' before 'enjoy'
     printf(""enjoy yourself\n"");
              ^~~~~
foo.c:5:28: error: stray '\' in program
     printf(""enjoy yourself\n"");
                            ^
foo.c:5:12: warning: zero-length gnu_printf format string [-Wformat-zero-length]
     printf(""enjoy yourself\n"");
            ^~

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