A sequence of steps that describe of method for solving a program.

Transfer control to another part of  a program.

Read a,b,c 

IF a<b THEN
SET temp=a,a=b,b=temp
END IF

IF a<c THEN
SET temp=a,a=c,c=temp
END IF

IF b<c THEN
SET temp=b,b=c,c=temp
END IF

PRINT a,b,c

1. Every program flowchart starts with a single terminal outline and ends with one or more terminal outlines.
2. The descriptive names that identify data items being used and the operations being performed should be used consistently.
3. The words used inside the outlines should be chosen so that they will have meaning for anyone reading the flowchart.
4. There should be only one flowline into an outline. Any merging flows should brought together on a flowline.
5. Try to leave white space in the flowchart by using connectors instead of flowlines that wander all over the flowchart.

This is a translation program that checks syntax errors from program code that the programmer may violate the rule of any specific language he/she has chosen. And it also tells the programmer what syntax errors were detected and where they are in the program code. Unlike interpreter, the compiler processes the entire program as a unit.