New soham
#include <stdio.h> #include <stdlib.h> #define MAX 20 charstk[20]; int top = -1; int isEmpty(){ return top == -1; } int isFull(){ return top == MAX - 1; } char peek(){ return stk[top]; } char pop(){ if(isEmpty()) return -1; char ch = stk[top]; top--; return(ch); } void push(char oper){ if(isFull()) printf("Stack Full!!!!"); else{ top++; stk[top] = oper; } } int checkIfOperand(char ch) { return (ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z'); } int precedence(char ch) { switch (ch) { case '+': case '-': return 1; case '*': case '/': return 2; case '^': return 3; } return -1; } int covertInfixToPostfix(char* expression) { int i, j; for (i = 0, j = -1; expression[i]; ++i) { if (checkIfOperand(expression[i])) expression[++j] = expression[i]; else if (expression[i] == '(') push(expression[i]); else if (expressi...