C & Circuit Debugging | Engineer's Day
- 1.What is the output of this program?#include int main(){int a = 0;a = 1 + (a++);printf("%d", a);return 0;}
- A.
2
- B.
1
- C.
0
- D.
3
- 2.What is the output of this program?int main(){int a = 0;for(; a <= 10; a++);printf("%d", a);}
- A.
10
- B.
11
- C.
12
- D.
9
- 3.What is the output of this program?int main(){int a = 0;for(a = 0; a <= 10; a++)for( a = 0; a <= 10; a++);printf("%d", a);return 0;}
- A.
10
- B.
12
- C.
11
- D.
9
- 4.What is the output of this program?int main(){int a = 0;for(a = 0; a <= 10; a++)for( a = 0; a <= 10; a++)for(a = 0; a <= 100; a++); printf("%d", a);return 0;}
- A.
103
- B.
101
- C.
13
- D.
11
- 5.What is the output of this program?void rec(int);int main(){int a = 10;rec(10);return 0;}void rec(int a){if(a == 0)return;printf("%d", a);rec(--a);}
- A.
10987654321
- B.
12345678910
- C.
1086420
- D.
109876543210
- 6.What is the output this program?int main(){int a = -10;while(a){a++;}printf("%d", a);return 0;}
- A.
10
- B.
0
- C.
-1
- D.
1
- 7.What is the output of this program?int main(){int a = 65;char c = a;printf("%d %c", c, a);}
- A.
65 A
- B.
A 65
- C.
65 65
- D.
A A
- E.
Compile time error
- F.
Run time error
- 8.What is the output of this C snippet?int main(){int a = 65;char c = a;int d = a + c;printf("%d", d);}
- A.
130
- B.
120
- C.
135
- D.
Compile time error
- E.
Runtime error
- 9.What is the output of this program?void main(){int k;for (k = -3; k < -5; k++)printf("Hello");}
- A.
Hello
- B.
Infinite Hello
- C.
Runtime error
- D.
Nothing
- 10.What is the output of this C snippet?int main(){int i = 0;for (i++; i == 1; i = 2)printf("%d ", i);printf("%d", i);}
- A.
1 2
- B.
1 2 4 5 6
- C.
0 1 2
- D.
0 1
- 11.What is the output of this C code?int main(){int x = 2, y = 2;float f = y + x /= x / y;printf("%d %f\n", x, f);return 0;}
- A.
Compile time error
- B.
2 4.000000
- C.
2 3.000000
- D.
Undefined behaviour
- 12.What is the output of this C code?int main(){int x = 1, y = 2;if (x && y == 1)printf("true\n");elseprintf("false\n");}
- A.
False
- B.
True
- C.
Compile time error
- D.
Runtime error
- 13.What is the output of this C code?int main(){int x = 1, y = 2;int z = x & y == 2;printf("%d\n", z);}
- A.
0
- B.
1
- C.
Compile time error
- D.
Undefined behaviour
- 14.What is the output of this C code?int main(){int x = 0, y = 2;if (!x && y)printf("true\n");elseprintf("false\n");}
- A.
True
- B.
False
- C.
Compile time error
- D.
Undefined behaviour
- 15.What is the output of this C code?void main(){int k = 4;float k = 4;printf("%d", k)}
- A.
Compile time error
- B.
4
- C.
4.000000
- D.
4.400000
- 16.A variable declared in a function can be used in main.
- A.
True
- B.
False
- C.
True if it is declared static
- D.
None of the mentioned
- 17.What is the output of this C code?int main(){int x = 2, y = 0;int z = (y++) ? y == 1 && x : 0;printf("%d\n", z);return 0;}
- A.
0
- B.
1
- C.
Undefined behaviour
- D.
Compile time error
- 18.What is the output of this C code?#includeint main(){int x = 1;short int i = 2;float f = 3;if (sizeof((x == 2) ? f : i) == sizeof(float))printf("float\n");else if (sizeof((x == 2) ? f : i) == sizeof(short int))printf("short int\n");}
- A.
Float
- B.
Short int
- C.
Undefined behaviour
- D.
Compile time error
- 19.What is the output of this C code?int main(){int a = 2;int b = 0;int y = (b == 0) ? a :(a > b) ? (b = 1): a;printf("%d\n", y);}
- A.
1
- B.
Compile time error
- C.
2
- D.
Undefined behaviour
- 20.What is the output of this C code?void main(){1 < 2 ? return 1 : return 2;}
- A.
Returns 1
- B.
Returns 2
- C.
Varies
- D.
Compile time error
- 21.What is the output of this C code?int main(){switch (printf("Do")){case 1:printf("First\n");break;case 2:printf("Second\n");break;default:printf("Default\n");break;}}
- A.
Do
- B.
DoFirst
- C.
DoSecond
- D.
DoDefault
- 22.Comment on the output of this C Code?int main(){int a = 1;switch (a){case 1:printf("%d", a);case 2:printf("%d", a);case 3:printf("%d", a);default:printf("%d", a);}}
- A.
No error, output is 1111
- B.
No error, output is 1
- C.
Compile time error, no break statement
- D.
Compile time error, case label outside switch statement
- 23.Switch statement accepts _______.
- A.
Int
- B.
Char
- C.
Long
- D.
All of the mentioned
- 24.Comment on the output of this C code?int main(){int a = 1;switch (a){case a:printf("Case A ");default:printf("Default");}}
- A.
Output: Case A
- B.
Output: Default
- C.
Output: Case A Default
- D.
Compile time Error
- 25.What is the output of this code having void return-type function?void foo(){return 1;}void main(){int x = 0;x = foo();printf("%d", x);}
- A.
1
- B.
0
- C.
Runtime error
- D.
Compile time error
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