Menu Driven Stack using Array in C

Stack/menu_driven_stack.c

@@ -0,0 +1,79 @@
+#include<stdio.h>
+
+void push(int);
+void pop();
+void display();
+int peek();
+
+int arrsize=5;
+int stackarr[5], top = -1;
+
+void main() {
+	int value, option,exitst=1;
+	while (exitst) {
+		printf("\n1. Push\n2. Pop\n3. Display\n4. Peek\n5. Exit");
+		printf("\nEnter your option: ");
+		scanf("%d", &option);
+		switch (option) {
+		case 1:
+			printf("Enter the value to be insert: ");
+			scanf("%d", &value);
+			push(value);
+			break;
+		case 2:
+			pop();
+			break;
+		case 3:
+			display();
+			break;
+		case 4:
+			peek();
+			break;
+		case 5:
+			printf("Exiting..");
+			exitst = 0;
+			break;
+		default:
+			printf("\nPlease enter correct option. Retry");
+		}
+	}
+
+}
+void push(int value) {
+	if (top == arrsize-1)
+		printf("\nStack is Currently Full. Please pop elements before pushing them.");
+	else {
+		top++;
+		stackarr[top] = value;
+		printf("\nInsertion was success. Stack got updated");
+	}
+}
+void pop() {
+	if (top == -1)
+		printf("\nNo more elements to delete. Please push elements before trying to delete.");
+	else {
+		printf("\nDeleted : %d", stackarr[top]);
+		top--;
+		printf("\nStack is updated. Topmost Element is deleted.");
+	}
+}
+void display() {
+	if (top == -1)
+		printf("\nStack is Empty!!!");
+	else {
+		int i;
+		printf("\nStack elements are:\n\n");
+		for (i = top; i >= 0; i--){
+			printf("| %d |\n", stackarr[i]);
+			printf("-----\n");
+
+		}
+	}
+}
+
+int peek(){
+	if (top == -1)
+		printf("\nStack is Empty");
+	else
+		printf("\nTop Value: %d\n",stackarr[top]);
+}