"int" in C language |Use of "int" in C|

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 Do we need to use integer data type in "C" even if we don't need it?

Answer: 

  • No, integer data type is a type widely used in  C and other programming languages. we use a generally a data type to declare any variable
For Example: int a,b;
  • From the above example you can see "int" which represents "integer datatype", and "a", "b" are two variables that are declared in integer type.
  • Integer data type generally takes 16,32,64 bits of space depending on the machine . Integer data type is used to represent integer values ("23"). 
  • There are also other data types like "float data type", "char", "string", "boolean" etc.,
  • If you don't need integer data type in your program you can skip using it.
  • But remember without declaring the variable in any data type(like float, int, char, string) you can't run the program.
  • Like if you want to display a float value then you can declare the variable in float data type.
  • But declaring a variable is very important in programming. 


Example program:


#include <stdio.h>
int main()
{
    printf("Hello World");
    return 0;
}

Explanation:


If you see in this program there in no declaration in it . So, it doesn't mean that the program is wrong it is correct, it is just going to print so it doesn't need any declaration further.

Another example program :




Output:




Same program without error to understand better.



Output:









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