t.();
}
int _tmain(int argc, _TCHAR* argv[])
{
char inFix[100];
char postFix[100];
double val;
while (1)
{
printf("enter an expression:");
gets_s(inFix);
if (strlen(inFix) == 0)
買粉絲ntinue;
printf("\n%s = ", inFix);
inFix2PostFix(inFix, postFix);
printf("%s = ", postFix);
val = postFixEval(postFix);
printf("%.3f\n", val);
}
return 0;
}
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