# C Programming Questions and Answers – Assignment Operators & Expressions – 2

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This set of C Multiple Choice Questions & Answers (MCQs) focuses on “Assignment Operators & Expressions – 2”.

Pre-requisite for this C MCQ set: Advanced C Programming Video Tutorial.

1. What is the type of the following assignment expression if x is of type float and y is of type int?

` y = x + y;`

a) int
b) float
c) there is no type for an assignment expression
d) double

Explanation: None.
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2. What will be the value of the following C expression?

` (x = foo()) != 1 considering foo() returns 2`

a) 2
b) True
c) 1
d) 0

Explanation: The C language sub-expression “x = foo()” will assign a value of 2 to the variable ‘x’. Then, it will check if this value is not equal to 1 which is true and hence the result will be 1.
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3. Operation “a = a * b + a” can also be written as ___________
a) a *= b + 1;
b) (c = a * b)!=(a = c + a);
c) a = (b + 1)* a;
d) All of the mentioned

Explanation: None.

4. What will be the final value of c in the following C statement? (Initial value: c = 2)

1. `c <<= 1;`

a) c = 1;
b) c = 2;
c) c = 3;
d) c = 4;

Explanation: None.

5. What will be the output of the following C code?

1. `    #include <stdio.h>`
2. `    int main()`
3. `    {`
4. `        int a = 1, b = 2;`
5. `        a += b -= a;`
6. `        printf("%d %d", a, b);`
7. `    }`

a) 1 1
b) 1 2
c) 2 1
d) 2 2

Explanation: None.

6. What will be the output of the following C code?

1. `    #include <stdio.h>`
2. `    int main()`
3. `    {`
4. `        int a = 4, n, i, result = 0;`
5. `        scanf("%d", &n);`
6. `        for (i = 0;i < n; i++)`
7. `        result += a;`
8. `    }`

a) Addition of a and n
b) Subtraction of a and n
c) Multiplication of a and n
d) Division of a and n

Explanation: None.

7. Which of the following is an invalid assignment operator?
a) a %= 10;
b) a /= 10;
c) a |= 10;
d) None of the mentioned

Explanation: None.

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