C Programming - Control Instructions - Discussion

@Gautam && @Madhu:

Yes gautam you are absolutely right I tried this code and it works, here the code is:

#include<stdio.h>
int main()
{
int x=10;
/*if(x>5)
{
printf("this is integer number:\n");
printf("this number is greater than 5\n");
printf("\n");
}
else if(x==5)
{
printf("this is an integer number:\n");
printf("the number is equal to 5:\n");
printf("\n");
}
else
{
printf("number is smaller than 5\n");
printf("\n");
}*/
x>5?(printf("this is integer number:\n"),printf("this number is greater then5\n")):(x==5?(printf("this is an integer number:\n"),
printf("the number is equl to 5:\n")):printf("number is smaller than 5\n"));
return(0);
}
Output:
This is integer number:
This number is greater than 5.

//So again we are at the same place where we started anyone please explain it very clearly.

Guys 1st option is wrong because we can not use any loop in that operator but we can use any looping statements in if else.

#include<stdio.h>
int main()
{
int i,a=5;
if(a==5)
{
a==5?for(i=0;i<5;i++){printf("namastey\n");}:printf("error");

}
}

This code will give an error "expression syntax ".

Here all options are correct, we can replace if else by conditional operator like:

if(a>b)
printf("hello");
else
printf("India");

Same can be implemented a>b? printf("hello") : printf("India").

Rest all options can be also implemented. So all are correct.

Can we multiple else statements?

If so which else statement will be executed in case failure of if statement?

@Akash is right, because this might be the case when we need to use a loop under if else statement, but we can't use looping with conditional operator. Only that is why first option is not correct.

Option D is correct. Since there are some if statements which do not have any else part and they cannot be converted into ?: So 3 conditions are fulfilled but first condition is not fulfilled.

One more thing that we cannot use return in conditional statement.

We can use ?: for nested if else statements too. Like if (x>5? (x>10?x=1:x=2) :x=3).

What does it mean by multiple if else statements?

Can anyone please explain why the first option is incorrect?

We can't use return statements in ?: whereas we can use it in if else blocks.
So option D is true.