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#include<stdio.h> #include<stdlib.h> #include<conio.h> #include<ctype.h> #define size 50 char s[size]; int top=-1; push(char elem) { return (s[++top]=elem); } char pop() { return (s[top--]); } int pr(char elem) { switch(elem) { case #: return 0; case '(': return 1; case +: case -:return 2; case '*': case '/':return 3; } return; } void main() { char infx[50],pofx[50],ch,elem; int i=0,k=0; }