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C Brain Teasers: Exercise Your Mind

Time to Pull Out Your Hair

Explore a coding puzzle that challenges your understanding of C programming logic and output prediction. Learn to analyze code carefully and improve your problem-solving skills in C through practical examples.

We'll cover the following...

Puzzle code

Read carefully the code given below:

C
#include <stdio.h>
void modify(char *c)
{
  *(c+1) = 'o'; 
}
int main()
{
  char *string = "cat";
  printf("Before: %s\n", string);
  modify(string);
  printf("After: %s\n", string);
  return(0);
}

Your task: Guess the output

Attempt the following test to assess your understanding.

Technical Quiz
1.

What is the expected output of the above code?

A.
Before: cat
After: cot
B.
Before: cat
After: oat
C.
Before: cat
After: cat
D.
Before: cat
Segmentation fault (core dumped)
1 / 1

Let's discuss the code and output together in the next lesson.