Pradeepkumar.org

ADA handles programmer defined exceptions and system defined exceptions
Some of the system defined exceptions are like 

NUMERIC_ERROR – raised whenever the abnormal precision in the program like divide by zero 
STORAGE-ERROR – raised whenever the program runs out of memory space
CONSTRAINT_ERROR – asserts when a variable goes out of its bound
TASKING_ERROR – raised during the incorrect use [...]

Continue reading Runtime Error (Exception) Handling

Benefits of Packages

Packages can be compiled, debugged independently
software maintenance is very easier
Once package is developed, they can be made accessible to everyone who has access to it.
packages provide more security                                                   [...]

Continue reading Packages in ADA

Blocks
A Block in ADA contains two parts specification and a body. The specification specifies the variable used inside the block and the body executes the statement for the block

syntax
block
begin
—
—
end

The main purpose of blocks are information hiding.
A Variable declared inside a block is accessible only within the block and nowhere outside the block.

Example
var x,y:integer
begin 
  y:=0;
 for x in 1..10 loop
  block
   [...]

Continue reading Blocks and Procedures in ADA

if-then-else
if yx:=4;elseif a=0 thenx:=6;elsed:=9;end if
for …. do
for i in 0..10 loopx(i) := i * j;end loop;
while
while x x:=x+i;end loop;case
case x is when 1 => y:=x;when 2 => y:=0;when others => y:=-1;end case

Continue reading ADA – Control Structures

Simple Data types//creates three variables for TEMPERATURE which is of type floattype TEMPERATURE is new float; ta, tb, tc: TEMPERATURE;
//creates three variables for PRESSURE which is of type floattype PRESSURE is new float; pa, pb, pc: PRESSURE;ta=pa is illegal as it is implicit type conversionta= TEMPERATURE(pa); is legal
//creates range between o to 10000type HEIGHT [...]

Continue reading ADA – Data types

Object oriented programming
Strong typing
Generic programming/templates
Exception handling
Facilities for modular organization of code
Standard libraries for I/O, string handling, numeric computing
Systems programming
Concurrent programming
Real-time programming

Helps for periodic and event driven tasks
Avoids unbounded priority inversion
Efficient implementation of Priority ceiling in ADA

Distributed systems programming

Interfaces to other languages (C, COBOL, Fortran)

Continue reading ADA – programming language Features