diff --git a/postfix.c b/postfix.c
new file mode 100644
index 0000000..52efe2f
--- /dev/null
+++ b/postfix.c
@@ -0,0 +1,101 @@
+#include<stdio.h>
+#include<stdlib.h>
+#include<ctype.h>
+#define MAX 25
+char a[MAX],b[MAX],stack[MAX];
+int top=-1;
+
+void push(char c){
+  if(top>MAX){
+    printf("An Error Occured! Please update MAX for better Perfomance.\n");
+    exit(0);
+  }
+  else{
+    top++;
+    stack[top]=c;
+  }
+}
+
+char pop(){
+  if(top==-1) {
+    printf("An Error Occured!\n");
+    exit(0);
+  }
+  else{
+    char a=stack[top];
+    top--;
+    return a;
+  }
+}
+
+
+
+void display(){
+  for(int i=0;b[i]!='\0';i++){
+    printf("%c",b[i]);
+  }
+}
+
+void insert(){
+  scanf("%s",a);
+}
+
+int priority(char c){
+  if(c=='+' ||c=='-') return 1;
+  else if(c=='*' ||c=='/') return 2;
+  else if(c=='^') return 3;
+  else if(c=='(') return 0;
+}
+
+int isoperator(char x){
+  if(x=='*'||x=='^'||x=='/'||x=='-'||x=='+') return 1;
+  else return 0;
+}
+
+
+
+void convert(){
+  push('(');
+  int i;
+  for (i=0;a[i]!='\0';i++);
+  a[i++]=')';
+  a[i]='\0';
+  int j=0;
+  for (i=0;a[i]!='\0';i++){
+    if(isalpha(a[i])){
+      b[j++]=a[i];
+    }
+
+
+    else if(a[i]=='(') push(a[i]);
+
+    else if(a[i]==')'){
+      while(stack[top]!='('){
+        b[j++]=pop();
+      }
+      char z=pop();
+    }
+    else if(isoperator(a[i])){
+      char c=a[i];
+      char d=stack[top];
+      while(priority(c)<=priority(d)){
+        b[j++]=pop();
+      }
+      push(c);
+    }
+  }
+  b[j]='\0';
+}
+
+
+
+void main(){
+  while(1){
+  printf("Enter the infix expression:");
+  insert();
+  convert();
+  printf("The postfix expression is:");
+  display();
+  printf("\n");
+}
+}