Explain the concepts of logical operators and assignment operators in C language

First, let’s learn about logical operators.

Logical Operators

• These are used to logically combine two (or more) expressions.

• They are logical AND (&&), logical OR (||) and logical NOT (!)

Logical AND ( &&)

exp1	exp2	exp1&&exp2
T	T	T
T	F	F
F	T	F
F	F	F

##Logical OR (||)

exp1exp2exp1||exp2##TTFF

T	T
F	T
T	T
F	#F

##Logical NOT (!)

exp!expTTFT

OperatorDescriptionExamplea=10,b=20,c=30Output##&&Logical AND##||Logical OR(a>b)||(a(10>20)||(101!logical negation!(a>b)!(10>20)1The following is a C program to calculate logical operators:

(a>b)&&(a	(10>20)&&(10	0
				Example

Demonstration

#include<stdio.h>
main (){
   float a=0.5,b=0.3,c=0.7;
   printf("%d</p><p>",(a<b)&&(b>c));//0//
   printf("%d</p><p>",(a>=b)&&(b<=c));//1//
   printf("%d</p><p>",(a==b)||(b==c));//0//
   printf("%d</p><p>",(b>=a)||(a==c));//0//
   printf("%d</p><p>",(b<=c)&&!(c>=a));//0//
   printf("%d</p><p>",!(b<=c)||(c>=a));//1//
}

Output

You will see the following Output -

0
1
0
0
0
1

Assignment operator

is used to assign a value to a variable.

Type

The type of the assignment operator is -

Simple assignment

Compound assignment

OperatorDescriptionExampleSimple assignment a=10a = 10"a=a 10below Given is a C program for compound assignment operator - Live Demonstration

		##=
	=,-=,*=,/=,%=	Compound assignment
a=10"a=a-10		Procedure

#include<stdio.h>
int main(void){
   int i;
   char a=&#39;h&#39;;
   printf("enter the value of i:</p><p>");
   scanf("%d",&i);
   printf("print ASCII value of %c is %d</p><p>", a, a);
   a += 5;
   printf("print ASCII value of %c is %d</p><p>", a, a);
   a *= a + i;
   printf("a = %d</p><p>", a);
   a *= 3;
   printf("a = %d</p><p>", a);
   a /= 2;
   printf("a = %d</p><p>", a);
   a %= 4;
   printf("a = %d</p><p>", a);
   return 0;
}

Output

You will see the following output -

enter the value of i:
3
print ASCII value of h is 104
print ASCII value of m is 109
a = -80
a = 16
a = 8
a = 0

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