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Positive or Negative or Zero Using Ternary Operator: C Program

C Program to check whether the user entered integer number is positive, negative or zero using ternary operator or Conditional operator.

Check Whether Number Is Positive or Negative or Zero Using Ternary Operator: C Program

[youtube https://www.youtube.com/watch?v=gYenZ8rYK8g]

YouTube Link: https://www.youtube.com/watch?v=gYenZ8rYK8g [Watch the Video In Full Screen.]

Note:
Any number greater than 0 is positive.
Any number less than 0 is negative.

Check Whether Number is Positive or Negative or Zero: C Program

#include < stdio.h >

int main()
{
    int a;

    printf("Enter an integer number\n");
    scanf("%d", &a);

    (a > 0) ?
    (printf("%d is positive\n", a)) :
    ( (a < 0) ?
      (printf("%d is Negative\n", a)) :
      (printf("%d is Zero\n", a))  
    );

    return 0;
}

Output 1:
Enter an integer number
15
15 is positive

Output 2:
Enter an integer number
-2
-2 is negative

Output 3:
Enter an integer number
0
0 is zero

In above C source code, we are using nested ternary / conditional operator. First we check if a is greater than 0, if its true then the user entered number is positive. If its false, then we check if a is less than 0 using nested ternary / conditional operator. If that is true, then a is negative, else the user entered number is 0.

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For full C programming language free video tutorial list visit:C Programming: Beginner To Advance To Expert

Number is Positive or Negative or Zero: C Program

C Program to check whether the user entered integer number is positive, negative or zero using else if construct.

Note:
Any number greater than 0 is positive.
Any number less than 0 is negative.

Check Whether Number is Positive or Negative or Zero: C Program

[youtube https://www.youtube.com/watch?v=lxNZZJ7NVlE]

YouTube Link: https://www.youtube.com/watch?v=lxNZZJ7NVlE [Watch the Video In Full Screen.]

Check Whether Number is Positive or Negative or Zero: C Program

#include < stdio.h >

int main()
{
    int a;

    printf("Enter an integer number\n");
    scanf("%d", &a);

    if(a > 0)
    {
        printf("%d is positive\n", a);
    }
    else if(a < 0)
    {
        printf("%d is negative\n", a);
    }
    else
    {
        printf("%d is zero\n", a);
    }

    return 0;
}

Output 1:
Enter an integer number
15
15 is positive

Output 2:
Enter an integer number
-2
-2 is negative

Output 3:
Enter an integer number
0
0 is zero

For list of all c programming interviews / viva question and answers visit: C Programming Interview / Viva Q&A List

For full C programming language free video tutorial list visit:C Programming: Beginner To Advance To Expert

Operator Precedence / Priority: C

Often times we use arithmetic operations, relational operators, logical operators and assignment operators together in a instruction / statement. We must know the precedence / priority of the operator so that we can write proper code.

Operator Hierarchy / Precedence / Priority

Priority	Operator	Type
1	!	Logical NOT Operator
2	* / %	Arithmetic Operator
3	+ –	Arithmetic Operator
4	< > <= >=	Relational Operator
5	== !=	Relational Operator
6	&&	Logical AND Operator
7	\|\|	Logical OR Operator
8	=	Assignment Operator

Note: Write down above table of operator priority on a piece of paper and have it handy while writing the code. You’ll get used to it after some time – until then, keep revisiting the hierarchy of operators.

Operator Precedence / Priority / Hierarchy: C

[youtube https://www.youtube.com/watch?v=hdbLSF5xQDI]

YouTube Link: https://www.youtube.com/watch?v=hdbLSF5xQDI [Watch the Video In Full Screen.]

For list of all c programming interviews / viva question and answers visit: C Programming Interview / Viva Q&A List

For full C programming language free video tutorial list visit:C Programming: Beginner To Advance To Expert

Post-decrement and Pre-decrement Operator: C Program

In this video tutorial we show the differences and working of post-decrement and pre-decrement operators.

Note: In pre-decrement, first the value of the variable is decremented after that the assignment or other operations are carried. In post-decrement, first assignment or other operations occur, after that the value of the variable is decremented.

Note:
a- -;
– -a;
a = a – 1;
a -= 1;

are all same if used independently.

Post-decrement and Pre-decrement Operator: C Program

[youtube https://www.youtube.com/watch?v=eaGXQ-GgLPw]

YouTube Link: https://www.youtube.com/watch?v=eaGXQ-GgLPw [Watch the Video In Full Screen.]

Pre-decrement Operator: C Program

#include < stdio.h >

int main()
{
    int a = 10, b;

    b = --a;

    printf("b = %d\n\n", b);
    printf("a = %d\n", a);

    return 0;
}

Output:
b = 9
a = 9

Here first the value of a decrements and then is assigned to variable b. So both a and b value will be 9.

#include < stdio.h >

int main()
{
    int a = 10;

    printf("a = %d\n\n", --a);
    printf("a = %d\n", a);

    return 0;
}

Output:
a = 9
a = 9

Here in the first printf statement a value gets decremented and then printed out.

Post-decrement Operator: C Program

#include < stdio.h >

int main()
{
    int a = 10, b;

    b = a--;

    printf("b = %d\n\n", b);
    printf("a = %d\n", a);

    return 0;
}

Output:
b = 10
a = 9

Here first value of a(i.e., 10) is assigned to b and then value of a is decremented. So b = 10 and a = 9 is printed.

#include < stdio.h >

int main()
{
    int a = 10;

    printf("a = %d\n\n", a--);
    printf("a = %d\n", a);

    return 0;
}

Output:
a = 10
a = 9

Here in the first printf statement a value gets printed after that its value gets decremented, which is shown in second printf statement.

For list of all c programming interviews / viva question and answers visit: C Programming Interview / Viva Q&A List

For full C programming language free video tutorial list visit:C Programming: Beginner To Advance To Expert

Post-increment and Pre-increment Operator: C Program

In this video tutorial we show the differences and working of post-increment and pre-increment operators.

Note: In pre-increment, first the value of the variable is incremented after that the assignment or other operations are carried. In post-increment, first assignment or other operations occur, after that the value of the variable is incremented.

Post-increment and Pre-increment Operator: C Program

[youtube https://www.youtube.com/watch?v=zdd7_hOorn0]

YouTube Link: https://www.youtube.com/watch?v=zdd7_hOorn0 [Watch the Video In Full Screen.]

Pre-increment Operator: C Program

#include < stdio.h >

int main()
{
    int a = 10, b;

    b = ++a;

    printf("b = %d\n\n", b);
    printf("a = %d\n", a);

    return 0;
}

Output:
b = 11
a = 11

Here first the value of a increments and then is assigned to variable b. So both a and b value will be 11.

#include < stdio.h >

int main()
{
    int a = 10;

    printf("a = %d\n\n", ++a);
    printf("a = %d\n", a);

    return 0;
}

Output:
a = 11
a = 11

Here in the first printf statement a value gets incremented and then printed out.

Post-increment Operator: C Program

#include < stdio.h >

int main()
{
    int a = 10, b;

    b = a++;

    printf("b = %d\n\n", b);
    printf("a = %d\n", a);

    return 0;
}

Output:
b = 10
a = 11

Here first value of a(i.e., 10) is assigned to b and then value of a is incremented. So b = 10 and a = 11 is printed.

#include < stdio.h >

int main()
{
    int a = 10;

    printf("a = %d\n\n", a++);
    printf("a = %d\n", a);

    return 0;
}

Output:
a = 10
a = 11

Here in the first printf statement a value gets printed after that its value gets incremented, which is shown in second printf statement.

For list of all c programming interviews / viva question and answers visit: C Programming Interview / Viva Q&A List

For full C programming language free video tutorial list visit:C Programming: Beginner To Advance To Expert