The simplest way to implement a stack in C programming is by using an array. Each element in the array represents a stack item, and the top of the stack is represented by the last element in the array.
Here is an example code snippet to implement a stack using an array:
#define MAX_SIZE 100
int stack[MAX_SIZE];
int top = -1;
void push(int item) {
if (top == MAX_SIZE – 1) {
printf(“Stack Overflow\n”);
return;
}
stack[++top] = item;
}
int pop() {
if (top == -1) {
printf(“Stack Underflow\n”);
return -1;
}
return stack[top–];
}
In this example, we define a maximum size for the stack (MAX_SIZE) and declare an array stack with that size. The variable top keeps track of the index of the top element in the stack. The push function adds an item to the stack, checking for stack overflow, while the pop function removes and returns the top item from the stack, checking for stack underflow.
This implementation is straightforward and efficient, making it an excellent choice for many scenarios.