How many types of selection statements in c language?

Answer 1

there are two types of selection statements in c-language they are if-else and switch case.these two are known as selection statements,because their syntax is like this,

if-else syntax:-if(condition)

{

statements

}

else

{

statement

}

in the abow syntax it contains two blocks first one is if and second one is else in 'if' it fills with required condition if the condition is satisfied then it execute the if block,whether it is false it execute the else statements.

switch case syntax:-

switch(condition)

{

case.1:statements;

case.2:statements;

case.3:statements;

.

.

.

case.n:statements;

default:statement;

}

in abow switch case we can select any case and execute,in this selection statement gives the fiexibulity to the user.it contains default statement it shows the wrong selection in these cases.

examples programs to these statements:-

1.biggest of two numbers program?

main()

{

int a,b,c;

printf("enter a,b values");

scanf(&a);

scanf(&b);

scanf(&c);

if(a>b)

{

printf("a is big");

}

else

{

printf("b is big");

}

}

out put:-

enter a,b values 8,5

a is big

enter a,b values 3,9

b is big

2.perform arithmetic operation intwo numbers?

main()

{

int a,b,c,d;

printf("enter a,b values");

scanf(&a);

scanf(&b);

scanf(&c);

printf("enter your choice"&c);

switch(c)

{

case.1:d=a+b;

printf("d value is"&d);

case.2:d=a-b;

printf("d value is"&d);

case.3:d=a*b;

printf("d value is"&d);

default:printf("wrong selection");

}

}

out put:-

enter a,b values 6,5

enter your choice 1

d=11

enter your choice 2

d=1

enter your choice 3

d=30