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Use of Logical Operators in C

Posted on October 18, 2021October 18, 2021 By christo No Comments on Use of Logical Operators in C

C allows usage of three logical operators, namely, &&, || and !. These are to be read as ‘AND’ ‘OR’ and ‘NOT’ respectively

Consider the following example

The marks obtained by a student in 5 different subjects are input through the keyboard. The student gets a division as per the following rules

Percentage above or equal to 60 – First division
Percentage between 50 and 59 – Second division
Percentage between 40 and 49 – Third division
Percentage less than 40 – Fail

Write a program to calculate the division obtained by the student

main( ) 
{ 
 int m1, m2, m3, m4, m5, per ; 
 printf ( "Enter marks in five subjects " ) ; 
 scanf ( "%d %d %d %d %d", &m1, &m2, &m3, &m4, &m5 ) ; 
 per = ( m1 + m2 + m3 + m4 + m5 ) / 5 ; 
if ( per >= 60 ) 
 printf ( "First division ") ; 
 else 
 { 
 if ( per >= 50 ) 
 printf ( "Second division" ) ; 
 else 
 { 
 if ( per >= 40 ) 
 printf ( "Third division" ) ; 
 else 
 printf ( "Fail" ) ; 
 } 
 } 
}

The else if Clause

There is one more way in which we can write program

main( ) 
{ 
int m1, m2, m3, m4, m5, per ; 
per = ( m1+ m2 + m3 + m4+ m5 ) / per ; 
if ( per >= 60 ) 
printf ( "First division" ) ; 
else if ( per >= 50 ) 
printf ( "Second division" ) ; 
else if ( per >= 40 ) 
printf ( "Third division" ) ; 
 else
printf ( "fail" ) ; 
} 

c language Tags:c language

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