Chapter - 3: The Decision Control

Point out the errors, if any, in the following programs:


I
Sections
1
Exercises

A

B

C

D

E

F

G

H

I

J

K

1

(a)

#include<stdio.h>
int main()
{
	int tag = 0, code = 1 ;
	
	if ( tag == 0 )
		( code > 1 ? printf ( "\nHello" ) ? printf ( "\nHi" ) ) ;
	else
		printf ( "\nHello Hi !!" ) ; 
	
	return 0;	
}

Error:

Error: ? operator always comes with an :, which is missing.


(b)

#include<stdio.h>
int main()
{
	int ji = 65 ;
	
	printf ( "\nji >= 65 ? %d : %c", ji ) ; 
	
	return 0;	
}

No Error.


(c)

#include<stdio.h>
int main()
{
	int i = 10, j ;
	
	i >= 5 ? ( j = 10 ) : ( j = 15 ) ;
	printf ( "\n%d %d", i, j ) ; 
	
	return 0;	
}

No Error.


(d)

#include<stdio.h>
int main()
{
	int a = 5 , b = 6 ;
	
	( a == b ? printf( "%d",a) ) ; 
	
	return 0;	
}

Error: ? operator always comes with an :, which is missing.


(e)

#include<stdio.h>
int main()
{
	int n = 9 ;
	
	( n == 9 ? printf( "You are correct" ) ; : printf( "You are wrong" ) ;) ; 
	
	return 0;	
}

Error: There should not be ; after printf statements.


(f)

#include<stdio.h>
int main()
{
	int kk = 65 ,ll ;
	
	ll = ( kk == 65 : printf ( "\n kk is equal to 65" ) : printf ( "\n kk is not equal to 65" ) ) ;
	printf( "%d", ll ) ; 
	
	return 0;	
}

Error: : is used without any ? operator.


(g)

#include<stdio.h>
int main()
{
	int x = 10, y = 20 ;
	
	x == 20 && y != 10 ? printf( "True" ) : printf( "False" ) ; 
	
	return 0;	
}

No Error.


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