Switch Statement
1. What will be the output of the following C code? (Assuming that we have entered the value 1 in the standard
input)
1. #include <stdio.h>
2. void main()
3. {
4. double ch;
5. printf("enter a value between 1 to 2:");
6. scanf("%lf", &ch);
7. switch (ch)
8. {
9. case 1:
10. printf("1");
11. break;
12. case 2:
13. printf("2");
14. break;
15. }
16. }
a) Compile time error
b) 1
c) 2
d) Varies
Answer: a
2. What will be the output of the following C code? (Assuming that we have entered the value 1 in the standard
input)
1. #include <stdio.h>
2. void main()
3. {
4. char *ch;
5. printf("enter a value between 1 to 3:");
6. scanf("%s", ch);
7. switch (ch)
8. {
9. case "1":
10. printf("1");
11. break;
12. case "2":
13. printf("2");
14. break;
15. }
16. }
a) 1
b) Compile time error
c) 2
d) Run time error
Answer: b
3. What will be the output of the following C code? (Assuming that we have entered the value 1 in the standard
input)
1. #include <stdio.h>
2. void main()
3. {
4. int ch;
5. printf("enter a value between 1 to 2:");
6. scanf("%d", &ch);
7. switch (ch)
8. {
9. case 1:
10. printf("1\n");
11. default:
12. printf("2\n");
13. }
14. }
a) 1
b) 2
c) 1 2
d) Run time error
Answer: c
4. What will be the output of the following C code? (Assuming that we have entered the value 2 in the standard
input)
1. #include <stdio.h>
2. void main()
3. {
4. int ch;
5. printf("enter a value between 1 to 2:");
6. scanf("%d", &ch);
7. switch (ch)
8. {
9. case 1:
10. printf("1\n");
11. break;
12. printf("hi");
13. default:
14. printf("2\n");
15. }
16. }
a) 1
b) hi 2
c) Run time error
d) 2
Answer: d
5. What will be the output of the following C code? (Assuming that we have entered the value 1 in the standard
input)
1. #include <stdio.h>
2. void main()
3. {
4. int ch;
5. printf("enter a value between 1 to 2:");
6. scanf("%d", &ch);
7. switch (ch, ch + 1)
8. {
9. case 1:
10. printf("1\n");
11. break;
12. case 2:
13. printf("2");
14. break;
15. }
16. }
a) 1
b) 2
c) 3
d) Run time error
Answer: b
6. What will be the output of the following C code?
1. #include <stdio.h>
2. int main()
3. {
4. int a = 1, b = 1;
5. switch (a)
6. {
7. case a*b:
8. printf("yes ");
9. case a-b:
10. printf("no\n");
11. break;
12. }
13. }
a) yes
b) no
c) Compile time error
d) yes no
Answer: c
7. What will be the output of the following C code?
1. #include <stdio.h>
2. int main()
3. {
4. int x = 97;
5. switch (x)
6. {
7. case 'a':
8. printf("yes ");
9. break;
10. case 97:
11. printf("no\n");
12. break;
13. }
14. }
a) yes
b) yes no
c) Duplicate case value error
d) Character case value error
Answer: c
8. What will be the output of the following C code?
1. #include <stdio.h>
2. int main()
3. {
4. float f = 1;
5. switch (f)
6. {
7. case 1.0:
8. printf("yes\n");
9. break;
10. default:
11. printf("default\n");
12. }
13. }
a) yes
b) yes default
c) Undefined behaviour
d) Compile time error
Answer: d
1. What will be the output of the following C code?
1. #include <stdio.h>
2. const int a = 1, b = 2;
3. int main()
4. {
5. int x = 1;
6. switch (x)
7. {
8. case a:
9. printf("yes ");
10. case b:
11. printf("no\n");
12. break;
13. }
14. }
a) yes no
b) yes
c) no
d) Compile time error
Answer: d
2. What will be the output of the following C code?
1. #include <stdio.h>
2. #define max(a) a
3. int main()
4. {
5. int x = 1;
6. switch (x)
7. {
8. case max(2):
9. printf("yes\n");
10. case max(1):
11. printf("no\n");
12. break;
13. }
14. }
a) yes no
b) yes
c) no
d) Compile time error
Answer: c
3. What will be the output of the following C code?
1. #include <stdio.h>
2. int main()
3. {
4. switch (printf("Do"))
5. {
6. case 1:
7. printf("First\n");
8. break;
9. case 2:
10. printf("Second\n");
11. break;
12. default:
13. printf("Default\n");
14. break;
15. }
16. }
a) Do
b) DoFirst
c) DoSecond
d) DoDefault
Answer: c
4. Comment on the output of the following C code.
1. #include <stdio.h>
2. int main()
3. {
4. int a = 1;
5. switch (a)
6. case 1:
7. printf("%d", a);
8. case 2:
9. printf("%d", a);
10. case 3:
11. printf("%d", a);
12. default:
13. printf("%d", a);
14. }
a) No error, output is 1111
b) No error, output is 1
c) Compile time error, no break statements
d) Compile time error, case label outside switch statement
Answer: d
5. Which datatype can accept the switch statement?
a) int
b) char
c) long
d) all of the mentioned
Answer: d
6. What will be the output of the following C code?
1. #include <stdio.h>
2. int main()
3. {
4. int a = 1;
5. switch (a)
6. {
7. case a:
8. printf("Case A ");
9. default:
10. printf("Default");
11. }
12. }
a) Output: Case A
b) Output: Default
c) Output: Case A Default
d) Compile time error
Answer: d
7. What will be the output of the following C code?
1. #include <stdio.h>
2. switch (ch)
3. {
4. case 'a':
5. case 'A':
6. printf("true");
7. }
a) if (ch == ‘a’ && ch == ‘A’) printf(“true”);
b)
if (ch == 'a')
if (ch == 'a') printf("true");
c) if (ch == ‘a’ || ch == ‘A’) printf(“true”);
d) none of the mentioned
Answer: c
