C/C /C Multiple Choice Questions Sample Test,Sample questions

Question:
Comment on the following expression? c = (n) ? a : b; can be rewritten as

1.if (!n)c = b; else c = a

2.if (n <= 0)c = b; else c = a

3. if (n > 0)c = a; else c = b;

4.All of the mentioned


Question:
Comment on the output of this C code?

void main()
{
int k = 8;
int m = 7;
int z = k < m ? k = m : m++;
printf("%d", z);
}

1.Run time error

2.7

3.8

4.Depends on compiler


Question:
For initialization a = 2, c = 1 the value of a and c after this code will be c = (c) ? a = 0 : 2;

1.a = 0, c = 0;

2.a = 2, c = 2;

3.a = 2, c = 2

4. a = 1, c = 2;


Question:
The code snippet below produces

void main()
{
1 < 2 ? return 1 : return 2;
}

1.returns 1

2.returns 2

3.varies

4.Compile time error


Question:
The output of the code below is

void main()
{
int k = 8;
int m = 7;
k < m ? k = k + 1 : m = m + 1;
printf("%d", k);
}

1.Compile time error

2.9

3.8

4.Run time error


Question:
The output of the code below is

void main()
{
int k = 8;
int m = 7;
k < m ? k++ : m = k;
printf("%d", k);
}

1.7

2.8

3.Compile time error

4.Run time error


Question:
Value of c after the following expression (initializations a = 1, b = 2, c = 1): c += (-c) ? a : b;

1.syntax error

2.c = 1

3.c = 2

4.c = 3


Question:
What is the output of this C code?

int main()
{
int a = 2;
int b = 0;
int y = (b == 0) ? a :(a > b) ? (b = 1): a;
printf("%d
", y);
}

1.Compile time error

2.1

3.2

4.Undefined behaviour


Question:
What is the output of this C code?

int main()
{
int x = 1;
int y = x == 1 ? getchar(): 2;
printf("%d
", y);
}

1.Compile time error

2.Whatever character getchar function returns

3.Ascii value of character getchar function returns

4.2


Question:
What is the output of this C code?

int main()
{
int x = 1;
short int i = 2;
float f = 3;
if (sizeof((x == 2) ? f : i) == sizeof(float))
printf("float
");
else if (sizeof((x == 2) ? f : i) == sizeof(short int))
printf("short int
");
}

1.float

2.short int

3.Undefined behaviour

4.Compile time error


Question:
What is the output of this C code?

int main()
{
int x = 2, y = 0;
int z = (y++) ? y == 1 && x : 0;
printf("%d
", z);
return 0;
}

1.0

2.1

3.Undefined behavior

4.Compile time error


Question:
What is the output of this C code?

int main()
{
int y = 1, x = 0;
int l = (y++, x++) ? y : x;
printf("%d
", l);
}

1.1

2.2

3.Compile time error

4.Undefined behaviour


Question:
What is the output of this C code?

void main()
{
int k = 8;
int m = 7;
int z = k < m ? k++ : m++;
printf("%d", z);
}

1.7

2.8

3.Run time error

4.None of the mentioned.


Question:
What will be the data type of the expression (a < 50) ? var1 : var2; provided a = int, var1 = double, var2 = float

1.float

2.int

3.double

4.Cannot be determined


Question:
Which expression has to be present in the following? exp1 ? exp2 : exp3;

1.exp1

2.exp2

3.exp3

4.All of the mentioned


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