Lecture 7 – Types of Errors in C



There are three types of errors in C

Syntax errors


These errors occur, if we misspell a keyword, type in wrong case, miss statement delimiter etc.

Logical errors


This error occurs, when we type wrong formula. For example we wanted to do A + B, and by mistake we wrote A – B. The program will work just fine, but there would be wrong output.

Runtime error


This error is beyond the control of the programmer. For example, you try to send a message to your friend and he/she’s offline.

Syntax Error
Logical Error
Runtime Error
Occurs when we misspell a keyword
Occurs when we type incorrect formula
Occurs when unknown condition arises
Using wrong case. E.g. writing Int instead of int
Using wrong formula. E.g. writing C = A – B; instead of
C = A + B
Wrong input by the user like
5 / 0 will give you a math error

Table 6 – Syntax Logical and Runtime Error

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