37 lines
638 B
C
37 lines
638 B
C
#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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#include <ctype.h>
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#include <string.h>
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const int ERR_NS_OPERANDS = 1;
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const int ERR_NS_OPERATORS = 2;
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const int ERR_INVALID_INPUT = 4;
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const int ERR_INVALID_FACTORIAL = 8;
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struct EE_STACK_NODE {
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double datum;
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struct EE_STACK_NODE* tail;
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};
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typedef struct EE_STACK_NODE NODE;
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typedef struct EE_STACK_NODE* STACK;
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void push(double,STACK*);
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void pop(STACK*);
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double peek(STACK*);
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int isNum(const char*);
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int arrity(const char);
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double evaluate(STACK*, char);
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double* operands(STACK*, int);
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double fact(int n);
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void report(STACK*);
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