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intro to PROCEDUREs, functions and var-parameters

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antranigv 2017-06-08 20:39:56 +04:00
parent 290ea11c03
commit f483b3630f
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10
procedures/function-procedure/Makefile Normal file
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VOC = /opt/voc/bin/voc
all:
$(VOC) -m Square.Mod
clean:
rm *.c
rm *.h
rm *.o
rm *.sym

17
procedures/function-procedure/Square.Mod Normal file
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MODULE square;
IMPORT Out;
VAR s : INTEGER;
PROCEDURE squared(x : INTEGER): INTEGER;
BEGIN
RETURN x * x
END squared;
BEGIN
s := squared(7);
Out.Int(s, 0); Out.Ln;
Out.Int(squared(8), 0); Out.Ln;
END square.

10
procedures/procedure/Makefile Normal file
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VOC = /opt/voc/bin/voc
all:
$(VOC) -m Procedure.Mod
clean:
rm *.c
rm *.h
rm *.o
rm *.sym

14
procedures/procedure/Procedure.Mod Normal file
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MODULE proc;
IMPORT Out;
PROCEDURE printSum(a, b : INTEGER);
BEGIN
Out.Int(a + b, 0); Out.Ln
END printSum;
BEGIN
printSum(6, 9)
END proc.

10
procedures/var-parameter/Makefile Normal file
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VOC = /opt/voc/bin/voc
all:
$(VOC) -m VarParam.Mod
clean:
rm *.c
rm *.h
rm *.o
rm *.sym

22
procedures/var-parameter/VarParam.Mod Normal file
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MODULE varparam;
IMPORT Out;
VAR
a, b : INTEGER;
PROCEDURE swapVals(VAR x, y : INTEGER);
VAR tmp : INTEGER;
BEGIN
tmp := x; x := y; y := tmp;
END swapVals;
BEGIN
a := 6; b := 9;
Out.String("initial "); Out.Ln;
Out.String("a : "); Out.Int(a, 0); Out.String("; b : "); Out.Int(b, 0); Out.Ln;
swapVals(a, b);
Out.String("after swap"); Out.Ln;
Out.String("a : "); Out.Int(a, 0); Out.String("; b : "); Out.Int(b, 0); Out.Ln;
END varparam.