Common Coding Issues

Undefined Variable

This error occurs when a variable is used without being declared first. Ensure that the variable is declared and initialized before use.

Null Reference Exception

This error happens when attempting to access a member on a null object reference. Check if the object is null before accessing its members.

Index Out of Bounds

Occurs when trying to access an array element with an index that is out of the valid range. Ensure the index is within the bounds of the array.

Syntax Error

A syntax error happens when the code does not conform to the language's syntax rules. Check for missing or misplaced characters in your code.

Type Mismatch

Occurs when an operation is performed on incompatible data types. Ensure that data types are compatible for the operation being performed.

Infinite Loop

An infinite loop occurs when the loop's terminating condition is never met. Ensure that the loop has a correct terminating condition.

Division by Zero

This error happens when dividing a number by zero. Ensure that the divisor is not zero before performing the division.

File Not Found

Occurs when attempting to access a file that does not exist. Ensure the file path is correct and the file exists.

Access Denied

This error occurs when the user does not have permission to access a resource. Check user permissions and authentication settings.

Deadlock

A deadlock happens when two or more processes are waiting indefinitely for resources held by each other. Implement proper resource management and avoid circular dependencies.