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Manasa Rao K.
Pursuing Masters in Computer Science at the University of Texas at Dallas
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Databases
TutorMe
Question:

What is the difference between an inner and outer join?

Manasa Rao K.
Answer:

An inner join involves joining two tables where a common column exists in both. An outer join is joining of two tables where there is no match in the two tables.

C++ Programming
TutorMe
Question:

What will be the a and b values after executing the following code? int a=0; int b=a++;

Manasa Rao K.
Answer:

a=1 b=0 This question is based on unary operators. The operator used here is unary increment which is used "after" the variable 'a'. Therefore, the value of 'a' is first stored in 'b' and then 'a' value is incremented. Had it been, "int b=++a" then the value of 'a' is first incremented and then stored in 'b' with a and b both storing value 1.

C Programming
TutorMe
Question:

Is there a problem with the following code? If yes, what is it? char *a = "hello", *b = "everyone"; strcat(a,b);

Manasa Rao K.
Answer:

The above code has an error. 'a' points to a string constant and hence cannot be altered.

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