Strcmpfirst, Second) Returns

question 31

Multiple Choice

strcmpfirst, second) returns

• A) <0 if first < second, 0 if first == second, positive otherwise
• B) true if first=second, false otherwise
• C) nothing, it's a void function
• D) >0 if first < second, 0 if first > second, <0 otherwise

Acknowledge the implications of input voltage presence on instruction states.

Appreciate the flexibility and limitations of contact instructions usage in PLC programming.

Understand the standardization and variability in addressing formats for I/O in PLCs.

Recognize the role of data tables in tracking device status and the effects of scan times on program responsiveness.

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