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POWhat is wrong with my program implementing a stack in C
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copied!<p>Hi i have a problem with my stack data structure program. It seems that when i define the size of my array/the imaginary size of array just to call it through a loop the size i defined or specified by the user is being depleted or somewhat edited when i enter a data or push.</p> <p>For ex. i entered 5 for the size and choose push and then add 2. It is working properly. But if i choose to push data again, it is now passing to the size variable. I do not know understand what is happening...</p> <pre><code>#include <stdio.h> #include <ctype.h> #include <conio.h> #include <string.h> #include <stdlib.h> #define p printf #define s scanf int top; int ar[1]; int size; main() { void push(); int opt, num; char cont[] = { 'y' }; clrscr(); p("Stacking Program"); p("\n\nData Size: "); s("%d", &size); p("\n"); while((cont[0] == 'y') || (cont[0] == 'Y')) { clrscr(); p("Stacking Program"); p("\n\nData Size: %d\n\n", size); p("MAIN MENU\n1. Pop\n2. Push\n3. Pick\n4. View\nChoose: "); s("%d", &opt); p("\n"); switch(opt) { case 1: pop(); break; case 2: if(top > size) { p("You can't push more data"); } else { p("Enter data for Data[%d]: ", top); s("%d", &num); push(num); } break; case 3: pick(); break; case 4: view(); break; default: p("Your choice is not in the list."); break; } p("\n\nDo you want continue\(Y\/N\)?"); s("%s", &cont[0]); } } pop() { int a; if(top < 0) { p("Stack empty."); return 0; } else { a = ar[top]; p("\(Data[%d] = %d\) removed.", top, a); top--; } } void push(int b) { top++; ar[top] = b; } pick() { if(top < 0) { p("Nothing to display."); return 0; } else { p("\(Data[%d] = %d\) is the last data.", top, ar[top]); } } view() { int i; if(top < 0) { p("Nothing to display."); return 0; } else { for(i = 1; i < (top + 1); i++) { p("Data[%d] = %d\n", i, ar[i]); } } } </code></pre>

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