#include <stdio.h>
main( )
{print ("ภูริภัทร \n");
}
#include <stdio.h>
main( )
{print ("ลิสอน \n");
}
#include <stdio.h>
main( )
{print ("ม. 4/7 \n");
}
#include <stdio.h>
main( )
{print ("เลขที่ 13 \n");
}
#include <stdio.h>
main( )
{print ("โรงเรียนศรีวิชัย \n");
}

Line 7: error: redefinition of 'main'
Line 3: error: previous definition of 'main' was here
Line 11: error: redefinition of 'main'
Line 3: error: previous definition of 'main' was here
Line 15: error: redefinition of 'main'
Line 3: error: previous definition of 'main' was here
Line 19: error: redefinition of 'main'
Line 3: error: previous definition of 'main' was here