C Programming - Control Instructions - Discussion

We can use it but it is not efficient and hence not preferred. Instead we can use an if statement to check for a range of values.

Eg. to check whether value of variable x lies between 0 and 100.

1.switch-case

switch(x)
{
case 0:
case 1:
case 2:
.
.
.
.
case 99:
case 100:printf("True");break;
default: printf("False");break;
}

//This is very long and tedious and hence not useful. Instead we can Accomplish this in a few lines only using if statement.

2.if-else

if(x>=0 && x<=100)
printf("True");
else printf("False");

Each and every case should have break condition. Whether it is mandatory?

It is not necessary to use a break in every switch statement.

We use break in case statement not in switch.

We can't check the ranges of non-integer values through switch statement, and so switch is not useful in checking the ranges of a number.

We can't check the ranges of non-integer values through switch statement, and so switch is not useful in checking the ranges of a number.

Can we wrote switch statement without cases? Please anyone tell me.

Why statement 2 is wrong?

We can check for ranges.

/*example*/
switch(a)
{
case 2:
case 3:
case 4:
/* some statements */
break;
case 5:
case 6:
case 7:
/* some statements */
break;
}