27 lines
428 B
C++
27 lines
428 B
C++
/* stack functions, part of the RPN calculator */
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#include <rational>
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static Rational: stack[50]
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static stackidx = 0
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push(Rational: value)
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{
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assert stackidx < sizeof stack
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stack[stackidx++] = value
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}
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Rational: pop()
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{
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assert stackidx > 0
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return stack[--stackidx]
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}
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clearstack()
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{
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assert stackidx >= 0
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if (stackidx == 0)
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return false
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stackidx = 0
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return true
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}
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