The amount of memory space to be allocated for a variable is derived by modifiers. Short h = -130 // short -ve integer data typeĭouble i = 4.1234567890 // double float data type Short g = 130 // short +ve integer data type Long e = -21556 // long -ve integer data type Long d = 41657 // long positive integer data type Int a = 4000 // positive integer data type
Name=’x’ Example to demonstrate the Built-in Data Types in C Language #include We can declare a float data type as follows: The minimum and maximum values for the ‘float’ data type are 3.4E-38 to 3.4E+38. The size of the data type ‘float’ is 4 bytes or 32 bits. We can declare int data type as follows:įloat is used to define floating-point numbers. The maximum value for the signed ‘int’ data type is 32767. The minimum value for the signed ‘int’ data type is -32768.
The size of the data type ‘int’ is 2 bytes or 16 bits. This is the difference between signed datatype and unsigned datatype. But if it is an unsigned type, the unsigned type strictly accepts only positive values. In that situation, we should go for the signed type because the signed data type will accept both positive and negative values. Sometimes requirements will be there to store negative value. In our program, we are not always working with only positive values. Using signed data type, we can store both positive or negative values. For a better understanding of the Character data types, please have a look at the following image. One is a signed character and the second one is an unsigned character. The Character Data Type in C language is divided into two types. 3 bytes of memory we are wasting which will reduce the performance of the application. In this case, if you are trying to choose a data type that occupies 4 bytes, then you are wasting 3 bytes of memory in your application.
then we should go for a data type in which it occupies only one byte of memory. Suppose to store the value 10, 1 Byte memory is required. Consider I am trying to store a phone number or I am trying to store an account number, such type of things we can store with the help of long integer type.ĭepending on the size of the data, we choose a particular datatype. To store such type of data, a very little integer is enough, so we can consider short data type. For example, department number is something like 10, 20, and 30, etc. It depends on the data and also depends on the size of the data. If you want to store one integer value, one integer data type is enough. The basic advantages of classifying these many types of nothing but utilizing the memory more efficiently and increasing the performance. Why integer data type is classified into six types? Data Structures and Algorithms Tutorials.
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