x=stack[top--]; y=stack[top];if(expr[i]=='+') stack[top]=y+x;elsestack[top]=y-x; }elsereturnInfinity; } }elseif(expr[i]=='*'||expr[i]=='/') {if(top) { x=stack[top--]; y=stack[top];if(expr[i]=='*') stack[top]=y*x;else{if(x) stack[top]=y/x;elseretur...
6-5 Evaluate Postfix Expression (25分) Write a program to evaluate a postfix expression. You only have to handle four kinds of operators: +, -, x, and /. ElementTypeEvalPostfix(char*expr ); whereexprpoints to a string that stores the postfix expression. It is guaranteed that there is e...
Java applications evaluate expressions. Evaluating an expression produces a new value that can be stored in a variable, used to make a decision, and more.How to write simple expressionsA simple expression is a literal, variable name, or method call. No operators are involved. Here are some ...
Java applications evaluate expressions. Evaluating an expression produces a new value that can be stored in a variable, used to make a decision, and more.How to write simple expressionsA simple expression is a literal, variable name, or method call. No operators are involved. Here are some ...