Static vs Dynamic Typed Languages

Static Typing/Typed

• A variable need not to be defined before they are not used.

• To use a variable that is done by explicit declaration.

       For example,

       /* C language code */

       #include<stdio.h>

       void main()

       {

          static int sum,num; // explicit declaration

   

          sum = 0;//use variables

   

          num = 10;

          sum = sum + num;

   

          printf("%d",sum);

       }

• Before using a variable must have to declare them.

• C, C++ and Java are statically typed languages.

• Errors are shown at compile time.

       int a = "50";//error shown after execution

Dynamic Typing/Typed 

• To use a variable that need not to use explicit declaration. 

          For example,

       /* Python Code */

       num1 = 5 #direct use of variable

       num2 = 10 

       sum = num1 + num2 

       print(' Addition of two numbers is {0} '.format (sum)) 

• Before using a variable need not to be declared.

• Python,JavaScript,PHP..etc.

• Error is shown at run-time.

       int sum = "Program" #checks at-line no further execution