LOOP
1.Which of the following statement about for loop is true ?
ans:- All
2.The GOTO statement is used:
ans:- an unconditional transfer of control to a named label
(C)
3.How many times i value is checked in the following C code?
#include <stdio.h>
int main()
{
int i = 0;
do {
i++;
printf("in while loop\n");
} while (i < 3);
}
ans:- 3 times
4.Give Output
#include <stdio.h>
void main()
{
int i = 2;
do
{
printf("Hi");
} while (i < 2);
}
ans:- Hi
5. What will be the output of the following C code?
#include <stdio.h>
int main()
{
while ()
printf("In while loop ");
printf("After loop\n");
}
ans:- Compile time error
6. #include <stdio.h>
void main()
{
int i = 0;
do
{
printf("Hello");
} while (i != 0);
}
ans:- Hello
7.#include <stdio.h>
void main()
{
int i = 0;
while (++i)
{
printf("H");
}
ans:- H print infinite times
8.#include <stdio.h>
void main()
{
double k = 0;
for (k = 0.0; k < 3.0; k++);
printf("%lf", k);
}
ans:- 3.0000
9.#include <stdio.h>
void main()
{
int k;
for (k = -3; k < -5; k++)
printf("Hello");
}
ans:- nothing or null
10. #include <stdio.h>
int main()
{
int i = 0;
for (;;;)
printf("In for loop\n");
printf("After loop\n");
}
ans:- compile time error
11.What will be the output of the following C code?
#include <stdio.h>
int main()
{
int i = 0;
for (i++; i == 1; i = 2)
printf("In for loop ");
printf("After loop\n");
}
a)In for loop after loop
b) After loop
c) Compile time error
d) Undefined behaviour
12.#include <stdio.h>
int main()
{
for (int i = 0;i < 1; i++)
printf("In for loop\n");
}
ans:- in for loop
13.
#include<stdio.h>
int main()
{
int a=32;
do
{
printf("%d ", a);
a++;
}while(a <= 30);
return 0;
}
ans:- 32
14.int main()
{
int a=32;
do
{
printf("%d ", a);
a++;
if(a > 35)
break;
}while(1);
return 0;
}
ans:- 32 33 34 35
15.
int main()
{
int k;
for(k=1; k <=5; k++);
{
printf("%d ", k);
}
return 0;
}
ans:- 6
16. #include < stdio.h >
void main()
{ unsigned char var=0;
for(var=0;var<=255;var++)
{
printf("%d ",var);
}
}
ans::- 0 1 2...255
17.
int main()
{
int n;
for (n = 9; n!=0; n--)
printf("n = %d", n--);
return 0;
}
ans:- infinite loop
18. #include <stdio.h>
int main()
{
int i=1;
while(i<=10 && i++)
printf("\nHello");
}
ans:- hello 10 times
ARRAY
1. Consider the statement int val[2] [4] = { 1, 2, 3, 4, 5,
6, 7, 8} ; 4 will be the value of
a.val[0 ][ 3]
b.val[0 ][ 4]
c.val[1 ][ 1]
d.none
ans:- a
2.4_5 Position number contained within a square
brackets e.g. my_array [5], is referred as
1.post scripts
2.subscript
3.element
4.none
ans:- 2
3. int main()
{
int arr[1]={10};
printf("%d\n", 0[arr]);
return 0;
}
ans:- 10
4. #include<stdio.h>
Int main()
{
char *str =”hello, world\n”;
printf(“%d”, strlen(str));
}
ans:- 13
5.#include <stdio.h>
int main()
{
printf("variable! %d \n", x);
return 0;
}
ans:- error
6. #include <stdio.h>
int main()
{
int main = 3;
printf("%d", main);
return 0;
}
ans:- 3
7. If the two strings are identical, then strcmp()
function returns
ans:- 0
8. #include <stdio.h>
int main()
{
int a, b;
printf("%d", scanf("%d%d",&a,&b));
return 0;
}
ans:- 2
9. What will be the output of the program?
#include<stdio.h>
#include<string.h>
int main()
{
char str1[20]="hello",str2[20]="world";
printf(“%s\n”, strcpy(str2, strcat(str1,str2)));
return 0;
}
ans:- helloworld
10.#include<stdio.h>
Int main()
{
printf(5+”Good Morning\n”);
return 0;
}
a.
Good Morning
b.
Good
c.
d.
M
Morning
ans:- d
11. Which of the following is not a library function that
operates on string?
1.strlen()
2.strcpy
3.strcmp
4.StrCon()
ans:- 4
12. In below program, what would you put in place of
“?” to print “Quiz”?
#include <stdio.h>
int main()
{
char arr[] = "GeeksQuiz";
printf("%s", ?);
return 0;
}
ans:- arr+5
13. void main()
{
int x = 10;
float x = 10;
printf("%d", x)
}
ans:- compile time error
14. What is the worst case complexity of bubble sort?
1.(nlogn)
2.O(logn)
3.(n)
4.(n2)
ans:- 4
15. #include<stdio.h>
Int main()
{
char str[11]=”hello”;
char *str1= “world”;
strcat(str,str1);
printf(“%s %d “,str, str[10]);
}
a.
helloworld 0
b.
helloworld anyvalue
c.
worldhello 0
d.
Segmentation fault/code crash
ans:- a