Answer Posted / asit ranjan

Syntax error occurs when there happens to be a misuse of a
programming language's instructions.It happens at the time
of compilation.such errors need to be rectified before
proceeding further.
e.g.
1> x_y+z will cause syntax error as '_' is not an
assignment operator.
2>if(a=b) will cause syntax error as '=' is not relational
operator.

Runtime Error occurs at run-time.Such error cause a program
to end abrubtly or even cause system shut-down.Such errors
are hard to detect.
e.g. Error caused due to low system memory.

Logical Error :- It may happen that a program contains no
syntax or run-time errors but still it doesn't produce the
correct O/P.It is because the developer has not understood
the problem statement properly.These errors are hard to
detect as well.
e.g. Error caused when any loop is not closed at the right
place.

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