Which of the following cannot be checked in a switch-case statement?

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Which of the following cannot be checked in a switch-case statement?



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2) What is the output of this C code(When 1 is entered)?

#include <stdio.h>
void main()
{
int ch;
printf("enter a value btw 1 to 2:");
scanf("%d", &ch);
switch (ch, ch + 1)
{
case 1: printf("1\n");
break;
case 2: printf("2");
break;
}
}

3) What will be the output of the following C code? (Assuming that we have entered the value 1 in the standard input)

 #include <stdio.h>
void main()
{
double ch;
printf("enter a value between 1 to 2:");
scanf("%lf", &ch);
switch(ch)
{
case 1: printf("1");
break;
case 2: printf("2");
break;
}
}

4) What is the output of this C code?

#include <stdio.h>
const int a = 1, b = 2;
int main()
{
int x = 1;
switch (x)
{
case a: printf("yes ");
case b: printf("no\n");
break;
}
}

5) The output of the following code segment will be

 char x= 'B';
switch(x)
{
case 'A': printf("a");
case 'B': printf("b");
default: printf("C");
}

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