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Computer MySQL Difficulty: Medium

Which of the following is the right syntax to copy n characters from the object pointed to by s2 into the object pointed to by s1? What is the purpose of the ensure keyword in Ruby exception handling? Which Python module is commonly used for creating and manipulating tuples? What will be the output of the following C code? #include <stdio.h> int main() { int i = 97, *p = &i; foo(&p); printf("%d ", *p); return 0; } void foo(int **p) { int j = 2; *p = &j; printf("%d ", **p); } How do you define a class that maps to a database table using SQLAlchemy?