do-while loop is useful when we want the statements within the loop must be executed
Only once
At least once
More than Once
Any one of the above
Correct Answer :
B. At least once
Related Questions
The function fopen() on failure returns---------------------.
0
NULL
1
none of the above
Every if statement can be converted into an equivalent switch statement.
True
False
It is necessary to initialize the array at the time of declaration.
True
False
Which of the following correctly describes C++ language?
Statically typed language
Dynamically typed language
Both Statically and dynamically typed language
Type-less language
The main() function can be called from any other function.
True
False
The expression (i + j)++ is illegal.
True
False
Which among the following is a unconditional control structure
do-while
if-else
goto
for
What is C Tokens?
The smallest individual units of c program
The basic element recognized by the compiler
The largest individual units of program
A & B Both
The output of the following code is:
main()
{
void msg()
{
printf("HELLO WORLD");
}
}
{
void msg()
{
printf("HELLO WORLD");
}
}
HELLO WORLD
Error
None of the above
Null
Structures within structures cannot be created.
True
False
The output of the following code is:
main()
{
int sub[50];
for(i=0; i<=48;i++)
{
sub[i]=i;
printf("
%d", sub[i]);
}
}
{
int sub[50];
for(i=0; i<=48;i++)
{
sub[i]=i;
printf("
%d", sub[i]);
}
}
0 to 48 will be displayed
48
49
Compilation Error
The size of signed integer is ------ bytes.
4
2
8
10
Which escape character can be used to beep from speaker in C?
\a
\b
\m
Which of the following is not recommended in a header file?
Type definitions (typedefs)
Class definitions
Function definitions
Template definitions
Identify the wrong statement
putchar(65)
putchar('x')
putchar("x")
putchar('
')
printf() is not a library function.
True
False
The statement "for (i = 0, j = 2; j <= 10; j++)" is a valid statement in 'C'.
True
False
What's wrong? while( (i < 10) && (i > 24))
the logical operator && cannot be used in a test condition
the while loop is an exit-condition loop
the test condition is always true
the test condition is always false
No commas or blanks are allowed within an integer or a real constant.
True
False
&& and & operators have the same meaning.
True
False
The output of the following code is:
main()
{
xyz: goto abc;
printf("Hello");
abc: printf("World");
goto xyz;
}
{
xyz: goto abc;
printf("Hello");
abc: printf("World");
goto xyz;
}
Infinite loop
Hello World
World Hello
Compilation error
Character data types cannot be declared as unsigned.
True
False
enum helps to create user defined datatype.
True
False
Which of the following language is predecessor to C Programming Language?
A
B
BCPL
C++
A continue statement causes execution to skip to
the return 0; statement
the first statement after the loop
the statement following the continue statement
the next iteration of the loop
The identifier argv[] is a pointer to an array of strings.
True
False
C programming language was developed by
Dennis Ritchie
Ken Thompson
Bill Gates
Peter Norton
The output of the following code is:
void main()
{
int a = 0;
while (a<=50) for(;;) if(++a % 50==0) break;
printf("a = %d", a);
}
{
int a = 0;
while (a<=50) for(;;) if(++a % 50==0) break;
printf("a = %d", a);
}
a = 100
a = 50
compilation error
runtime error
fopen() function returns a pointer to the open file.
True
False
= and = = have the same operation.
True
False