What will be the output of the following program?

Asked In Exam: BPSC TRE 3.0 

#include <stdio.h>#include <string.h>int main(){ char str[] = "san foundry"; int len = strlen(str); int i; for(i = 0; i < len; i++) push(str[i]); // pushes each character into stack for(i = 0; i < len; i++) printf("%c", pop()); // pops and prints from stack}

Options

  • A. yrdnuof nas
  • B. foundry nas
  • C. sanfoundry
  • D. san foundry

Correct Answer (Detailed Explanation is Below)

A. yrdnuof nas

Detailed Explanation

Step 1: Push all characters into stack
Stack (top at right):
s a n   f o u n d r y

Step 2: Pop all characters from stack

Stack follows LIFO (Last In First Out)

So popping will reverse the string.

Reversed string:
yrdnuof nas

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BPSC Tre 4.0 DSA Practice Set

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