What is wrong with the following code and what will be the result? #include <stdio.h> int main() { int arr[5] = {1, 2, 3, 4, 5}; printf("%d\n", arr[5]); return 0; }

The program will print a garbage value or crash

The program will output Segmentation fault

#include <stdio.h> int main() { int x; printf("%d\n", x); return 0; } what will be the output of the code

The program will print a garbage value

The program will print a segmentation fault error

The program will print 0 because the variable x is automatically initialized

Which of the following statements is the best way to debug a C program?

Use a debugger to step through the code and watch variable values.

Add printf() statements throughout the code to check the values of variables.

Use the exit() function to terminate the program at different points to see if it reaches certain areas.

c-debugging

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c-debugging

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Practice Problem

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Hard

c debugging 2k25

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40 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

#include<stdio.h>
int main()
{
int a = 5;
printf("%d"+1,a);
return 0;
}

Compilation error

Runtime error

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

#include<stdio.h>
#define FALSE -1
#define NULL 0
#define TRUE 1
int main(){
if(NULL)
printf("NULL");
else if(FALSE)
printf("TRUE");
else
printf("FALSE");
return 0;
}

FALSE

NULL

TRUE

COMPILATION ERROR

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

#include<stdio.h>
int main(){
int i = 0, j = 1, k = 0;
if(++k, j, i++)
printf("%d %d %d", i, j, k);
return 0;
}

prints nothing

1 1 0

0 1 0

COMPILATION ERROR

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

#include<stdio.h>
int main(){
int i;
if(true)
printf("This will work");
else
printf("This will not work");
return 0;
}

This will work

This will not work

Compilation Error

Runtime error

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

#include<stdio.h>
int x = -1;
int main(){
while(x++ == 1)
printf("loop");
return 0;
}

Prints nothing

LOOP

LOOP LOOP

LOOP LOOP LOOP

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

#include<stdio.h>
int main(){
int i = 5;
while(--i > 0)
printf("Loop ");
return 0;
}

Loop Loop Loop Loop

Loop Loop Loop Loop Loop

Loop Loop Loop Loop Loop LOOP

Infinite loop

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

#include<stdio.h>
#define loop for(;;)
int main()
{
printf("DONE");
loop;
return 0;
}

Compilation error

Done

Program never ends

None of the above

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c-debugging

40 questions

#include<stdio.h>
int main()
{
int a = 5;
printf("%d"+1,a);
return 0;
}

#include<stdio.h>
#define FALSE -1
#define NULL 0
#define TRUE 1
int main(){
if(NULL)
printf("NULL");
else if(FALSE)
printf("TRUE");
else
printf("FALSE");
return 0;
}

#include<stdio.h>
int main(){
int i = 0, j = 1, k = 0;
if(++k, j, i++)
printf("%d %d %d", i, j, k);
return 0;
}

#include<stdio.h>
int main(){
int i;
if(true)
printf("This will work");
else
printf("This will not work");
return 0;
}

#include<stdio.h>
int x = -1;
int main(){
while(x++ == 1)
printf("loop");
return 0;
}

#include<stdio.h>
int main(){
int i = 5;
while(--i > 0)
printf("Loop ");
return 0;
}

#include<stdio.h>
#define loop for(;;)
int main()
{
printf("DONE");
loop;
return 0;
}

#include<stdio.h>
int main()
{
int num = 8;
printf ("%d %d", num << 1, num >> 1);
return 0;
}

#include<stdio.h>
int main()
{
int i = 5;
int a = ++i + ++i + ++i + ++i;
printf("%d",a);
return 0;
}

#include<stdio.h>
int main(){
int default = 5, a = 3;
if(a > 2)
printf("%d",default);
return 0;
}

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c-debugging

40 questions

#include<stdio.h>int main(){ int a = 5; printf("%d"+1,a); return 0;}

#include<stdio.h>#define FALSE -1#define NULL 0#define TRUE 1int main(){ if(NULL) printf("NULL"); else if(FALSE) printf("TRUE"); else printf("FALSE"); return 0;}

#include<stdio.h>int main(){ int i = 0, j = 1, k = 0; if(++k, j, i++) printf("%d %d %d", i, j, k); return 0;}

#include<stdio.h>int main(){ int i; if(true) printf("This will work"); else printf("This will not work"); return 0;}

#include<stdio.h>int x = -1;int main(){ while(x++ == 1) printf("loop"); return 0;}

#include<stdio.h>int main(){ int i = 5; while(--i > 0) printf("Loop "); return 0;}

#include<stdio.h>#define loop for(;;)int main(){ printf("DONE"); loop; return 0;}

#include<stdio.h>int main(){ int num = 8; printf ("%d %d", num << 1, num >> 1); return 0;}

#include<stdio.h>int main(){ int i = 5; int a = ++i + ++i + ++i + ++i; printf("%d",a); return 0;}

#include<stdio.h>int main(){ int default = 5, a = 3; if(a > 2) printf("%d",default); return 0;}

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#include<stdio.h>
int main()
{
int a = 5;
printf("%d"+1,a);
return 0;
}

#include<stdio.h>
#define FALSE -1
#define NULL 0
#define TRUE 1
int main(){
if(NULL)
printf("NULL");
else if(FALSE)
printf("TRUE");
else
printf("FALSE");
return 0;
}

#include<stdio.h>
int main(){
int i = 0, j = 1, k = 0;
if(++k, j, i++)
printf("%d %d %d", i, j, k);
return 0;
}

#include<stdio.h>
int main(){
int i;
if(true)
printf("This will work");
else
printf("This will not work");
return 0;
}

#include<stdio.h>
int x = -1;
int main(){
while(x++ == 1)
printf("loop");
return 0;
}

#include<stdio.h>
int main(){
int i = 5;
while(--i > 0)
printf("Loop ");
return 0;
}

#include<stdio.h>
#define loop for(;;)
int main()
{
printf("DONE");
loop;
return 0;
}

#include<stdio.h>
int main()
{
int num = 8;
printf ("%d %d", num << 1, num >> 1);
return 0;
}

#include<stdio.h>
int main()
{
int i = 5;
int a = ++i + ++i + ++i + ++i;
printf("%d",a);
return 0;
}

#include<stdio.h>
int main(){
int default = 5, a = 3;
if(a > 2)
printf("%d",default);
return 0;
}