C Programming Questions and Answers – Switch Statements – 1

C Programming Questions and Answers – Switch Statements – 1

1. What is the output of this C code(when 1 is entered)?

#include <stdio.h>
void main()
{
double ch;
printf(“enter a value btw 1 to 2:”);
scanf(“%lf”, &ch);
switch (ch)
{
case 1:
printf(“1”);
break;
case 2:
printf(“2”);
break;
}
}
a) Compile time error
b) 1
c) 2
d) Varies

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

#include <stdio.h>
void main()
{
char *ch;
printf(“enter a value btw 1 to 3:”);
scanf(“%s”, ch);
switch (ch)
{
case “1”:
printf(“1”);
break;
case “2”:
printf(“2”);
break;
}
}
a) 1
b) Compile time error
c) 2
d) Run time error

3. 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)
{
case 1:
printf(“1\n”);
default:
printf(“2\n”);
}
}
a) 1
b) 2
c) 1 2
d) Run time error

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

#include <stdio.h>
void main()
{
int ch;
printf(“enter a value btw 1 to 2:”);
scanf(“%d”, &ch);
switch (ch)
{
case 1:
printf(“1\n”);
break;
printf(“hi”);
default:
printf(“2\n”);
}
}
a) 1
b) hi 2
c) Run time error
d) 2

5. 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;
}
}
a) 1
b) 2
c) 3
d) Run time error

6. What is the output of this C code?

#include <stdio.h>
int main()
{
int a = 1, b = 1;
switch (a)
{
case a*b:
printf(“yes “);
case a-b:
printf(“no\n”);
break;
}
}
a) yes
b) no
c) Compile time error
d) yes no

7. What is the output of this C code?

#include <stdio.h>
int main()
{
int x = 97;
switch (x)
{
case ‘a’:
printf(“yes “);
break;
case 97:
printf(“no\n”);
break;
}
}
a) yes
b) yes no
c) Duplicate case value error
d) Character case value error

8. What is the output of this C code?

#include <stdio.h>
int main()
{
float f = 1;
switch (f)
{
case 1.0:
printf(“yes\n”);
break;
default:
printf(“default\n”);
}
}
a) yes
b) yes default
c) Undefined behaviour
d) Compile time error

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