Question

1-Is it possible to run a program without a main() function?

Yes

No

2- How many main() functions can one have in a program?

• 2

• This depends on what compiler you use.

• As many as you like

• 1

3- What does the following code fragment leave in x?

char a = 'A';

int x = sizeof (a);

• 1

• Depends on what compiler you use.

• 4

• 2

4- True or false: In a C program I can have two functions with the same name.

• True
• False

5- What will the following print?

int main(void)

{

int a = 10/3;

printf("%d", a);

}

• 3.0
• 1
• 3.33
• 3

6- What will the following program produce?

int main(void)

{

int a = 3.7;

printf("%d", a);

}

• 3
• Compile error
• 4
• 3.7

7- What will be the result of the following program fragment?

int a, b, c;

a = b = c = 12;

• a, b, and c will all be set to 12
• Runtime error
• 0

b. 1

c. it will never stop printing hello

   d. this will produce a compile error

• c will be set to 12, a and b are undefined

8.How many times will "hello" be printed?

int main(void)

{

int i = 0;

while(i < 5)

{

printf("hello\n");

}

}

8- How many times will the "hello" be printed?

int main(void)

{

int i;

for(i = 0; i < 10; i++);

{

printf("%d", "hello");

}

}

• 1
• 0
• This will give a compile error
• 10

9- What will the following program print?

int main void()

{

int k, m, count = 0;

for (k = 0; k < 5; k++)

{

for(m = 0; m < 2; m++)

{

count++;

}

}

printf("%d", count);

}

• 17
• 10
• 5
• 0

10- What does the following line of code tell the compiler?

int thing(int, int);

• thing is a function that requires two int paramaters and returns an int value
• thing is a subprogram that ultimately does nothing
• None of the above
• Nothing. This is an illegal statement

Answer 1

1) Is it possible to run a program without a main() function?
Answer: No
Explanation: The Program Execution Starts with main() FUnction without main we cannot run the Program

2) How many main() functions can one have in a program?
Answer: Option d)1
Explanation:Each and Every Program should have only one main() functions

3) Answer: Option a) 1
Explanation:

Program:

mtino 1 #include<stdio.h> 2 - int main() { 3 char a = 'A'; int x = sizeof (a); printf("x = %d", x); 6 }

#include<stdio.h>
int main() {
char a = 'A';
int x = sizeof (a);
printf("x = %d", x);
}

Output:

x = 1

4) Answer: Option c) 3
Explanation:

Program:

1 2 3- 4 5 6 #include<stdio.h> int main(void) { int a = 10/3; printf("%d", a); }

#include<stdio.h>
int main(void)
{
int a = 10/3;
printf("%d", a);
}

Output:

6) Answer: Option a) 3

#include<stdio.h>
int main(void)
{
int a = 3.7;
printf("%d", a);
}

Output:

7) Option a) a, b, and c will all be set to 12

Explanation:

Program:

#include<stdio.h>
int main(void)
{
int a, b, c;
a = b = c = 12;
printf("a= %d\n", a);
printf("b= %d\n", b);
printf("c= %d", c);
}

Output:

E

8) Answer: Option c. it will never stop printing hello

Program:

#include<stdio.h>
int main(void)
{
int i = 0;
while(i < 5)
{
printf("hello\n");
}
}

Output:

hello hello hello hello hello hello hello hello hello hello hello hello hello hello hello hello hello hello hello hello hello hello
9) answer: Option b) 10

Explanation:

Program:

#include<stdio.h>
int main(void)
{
int k, m, count = 0;
for (k = 0; k < 5; k++)
{
for(m = 0; m < 2; m++)
{
count++;
}
}
printf("%d", count);
}

Output:

10) Answer: Option a) thing is a function that requires two int paramaters and returns an int value