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<b><font face="Arial, Helvetica, sans-serif" size="4" color="#FF0033">Program </font><font face="Arial, Helvetica, sans-serif" size="4" color="#000000"> <font color="#0033CC">postfix </font> <i><font color="#FF0033"> Q(n)</font></i>
void <font color="#FF0033">postfix</font>(void)
{
<i><font size="3" color="#FF0099">/* output the postfix of the expression. The expression string, the stack,
and top are glogal */
</font></i>char symbol;
precedence token;
int n = 0;
int top = 0; <i><font size="3" color="#FF0099">/* place eos on stack */</font></i>
stack[0] = eos;
for ( token = get_token(&symbol, &n); token != eos;
token =get_token(&symbol,&n) ) {
if ( token == operand )
printf("%c",symbol);
else if ( token == rparen ) {
<i><font size="3" color="#FF0099">/* unstack tokens until left parenthesis */</font></i>
while ( stack[top] != lparen )
print_token(delete(&top));
delete (&top); <i><font size="3" color="#FF0099">/* discard the left parenthesis */</font></i>
}
else {
<i><font size="3" color="#FF0099">/* remove and print symbols whose isp is greater than or
equal to the current token's icp */</font></i>
while ( isp[stack[top]] >= icp[token] )
printf_token(delete(&top));
add(&top, token);
}
}
while ( (token=delete(&top)) != eos )
print_token(token);
printf("\n");
}</font></b>
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