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Today’s Lecture

Today’s Lecture. Parameters Call-by-value Call-by-reference. Parameters. Two methods of passing arguments as parameters Call-by-value "copy" of value is passed Call-by-reference "address of" actual argument is passed. Call-By-Reference Parameters.

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Today’s Lecture

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  1. Today’s Lecture • Parameters • Call-by-value • Call-by-reference

  2. Parameters • Two methods of passing arguments as parameters • Call-by-value • "copy" of value is passed • Call-by-reference • "address of" actual argument is passed

  3. Call-By-Reference Parameters • Used to provide access to caller’sactual argument • Caller’s data can be modified by called function! • Specified by ampersand, &, after type in formal parameter list

  4. Call-By-Reference Details • What’s really passed in? • A "reference" back to memory location of actual argument

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