Need for Datatypes

• To allocate memory on RAM, we need to specify size
• Example:

* i need 4 bytes
* call that 4 bytes as number

• Solution: Datatype
• Depending on the type of data which you are storing in RAM, compiler/interpreter requests for specific size

int i;

• Some of the Data types are immutable, when ever value of the variable is changed, it leads to creation of new memory locations.

Memory Leak

• Applications/Programs generally allocate memory for execution.
• Memory Leak is situation where your app/program is allocating the memory but not freeing it up.
• Consequence of the memory leak is application will be crashed at some point.
• Memory Leaks can be idenfied by using memory profiling tools.