Mr. John a principal of an engineering college promised his student who was studying in the final year engineering that if he allows his professor to complete the syllabus on time, principal john would as the teacher to passing out in the final exam. The student promised but did not allow professor to complete syllabus. Professor passed the student before exams. subsequently still the syllabus could not be completed. The professor filed a suit for the reversal of result. could he be succeeded? Justify.