MT-CC106

is a primary concept in most high-level programming languages. In its simplest sense, it is a block of code.

Both sides must be true

• And
• or
• Xor
• Not

One side or other must be true

• And
• or
• Xor
• Not

One side or other must be true but not both

• And
• or
• Xor
• Not

Negates truth

• And
• or
• Xor
• Not

performs an indicated action only when the condition is True; otherwise the action is skipped.

• if then
• if then else
• nested if then else
• select case

structure allows the programmer to specify that a different action is to be performed when the condition is True than when the condition is False.

• if then
• if then else
• nested if then else
• select case

test for multiple cases by placing If...Then...Else selection structures inside If...Then...Elsestructures. Syntax of the Nested If...Then...Else selection structure

• if then
• if then else
• nested if then else
• select case

control structure is preferred when there exist many different conditions.

• if then
• if then else
• nested if then else
• select case

is said to be the set of instructions which are repeated again and again in a program.