Added stack implementaion using array

Language/C/stack.c

@@ -0,0 +1,72 @@
+//Array implementation of stack in c with all stack operations.
+#include <stdio.h>
+#include <stdlib.h>
+
+int top = -1;
+
+void push(int la[], int x){
+
+
+    int item;
+    printf("Enter a value to be pushed : ");
+    scanf("%d", &item);
+    top++;
+    la[top] = item;
+
+    printf("\n");
+}
+
+void pop(int la[]){
+
+    if (top <= -1)
+    {
+        printf("Stack is underflow\n\n");
+    } else
+    {
+        printf("The popped element is " "%d" "\n\n", la[top]);
+        top--;
+    }   
+}
+
+int peek(int la[]){
+
+    if (top == -1)
+    {
+        printf("Underflow\n\n");
+        return 0;
+    } else
+    {
+        printf("The top element is " "%d" "\n\n", la[top]);
+        return la[top];
+    } 
+}
+
+void display(int la[]){
+
+    if (top >= 0)
+    {
+        printf("Stack : ");
+        for (int i = top; i>= 0; i--)
+        {
+            printf("%d ", la[i]);
+        }
+        printf("\n\n");
+    } else
+    {
+        printf("The stack is empty.\n\n");
+    }  
+}
+
+int main(){
+
+    int stack[100];
+    int m;
+    printf("Enter the no. of elements in the stack (1 - 100) : ");
+    scanf(" %d", &m);
+    printf("\n");
+
+
+    printf("\n");
+
+    return 0;
+}