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Call by Value and Result

 (1)
Call by Value /Call by Reference /Call by Value and Reference Call by Value ๋„˜๊ฒจ์ฃผ๋Š” ๋ณ€์ˆ˜(Actual Parameter)์™€ ๋ฐ›๋Š” ๋ณ€์ˆ˜(Formal Parameter)๊ฐ€ ๋ฌผ๋ฆฌ์ ์œผ๋กœ ๋‹ค๋ฅธ ๋ฉ”๋ชจ๋ฆฌ ์˜์—ญ์„ ๊ฐ€์ง€๊ณ  ์žˆ๋‹ค. Call by Reference ๋ฌผ๋ฆฌ์ ์œผ๋กœ ๊ฐ™์€ ๋ฉ”๋ชจ๋ฆฌ ์˜์—ญ์„ ๊ณต์œ ํ•˜์—ฌ ๋„˜๊ฒจ์ฃผ๋ฉฐ ๊ฐ’์€ ์ฃผ์†Œ์ด๋‹ค. Call by Value and Result ๋ณ€์ˆ˜์˜ ๊ฐ’์„ ๋„˜๊ฒจ์ฃผ๊ณ  ๋ฐ›๋Š” ๊ตฌ๋ฌธ์—์„œ ์ž‘์—…์„ ์„ฑ๊ณต์ ์œผ๋กœ ์ˆ˜ํ–‰ํ•˜์˜€์„ ๊ฒฝ์šฐ ๋ณ€๊ฒฝ๋œ ๊ฐ’์„ ๋˜๋Œ๋ ค ์ค€๋‹ค. ๋ฌผ๋ฆฌ์ ์œผ๋กœ๋Š” ๋‹ค๋ฅธ ์˜์—ญ์„ ์‚ฌ์šฉํ•œ๋‹ค. Call by Value FORM subr USING .. VALUE(pi) [TYPE | LIKE ]. USING ํ‚ค์›Œ๋“œ ๋‹ค์Œ ํŒŒ๋ผ๋ฏธํ„ฐ๋ฅผ ์ž‘์„ฑํ•˜๊ณ , VALUE ๊ตฌ๋ฌธ์„ ์‚ฌ์šฉํ•œ๋‹ค. VALUE ๊ตฌ๋ฌธ์—์„œ Formal Parameter ๋Š” ์ž์‹ ์˜ ๋ฉ”๋ชจ๋ฆฌ๋ฅผ ๊ฐ€์ง„๋‹ค. Subroutine..
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