Programming languages | Practice Questions

Multiple choice technology programming languages

#include main(){ extern int i; i=23; printf("%d",i); }

23
Prints some address
Compilation error
Run time error

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Multiple choice technology programming languages

#include main(){ static int a[20]; int i=0; a[i]=i++; printf("%d %d %d",a[0],a[1],i); }

0 0 0
0 1 0
0 0 1
0 1 1

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Multiple choice technology programming languages

#include main(){ int a=2; int *p=&a; print("%x\t",p); print("%x\t",*p++); print("%x\t",p); }

someaddress value someaddress
value value value
syntax error
compilation error

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Multiple choice technology programming languages

main() { int a[5] = {10,20,30,40,50}; char *p; p=(char *)a; printf("%d\n",a); }

some value
compilation error
10
50

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Multiple choice technology programming languages

#include main (){ char c[] = "Hello"; char *p = "Hello"; printf("Size of c: %d Addr of c:%x\n",sizeof(c),c); }

Size of c: some value Addr of c:some address
Size of c: some value Addr of c:some value
Size of c: some address Addr of c:some address
Compilation error

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Multiple choice technology programming languages

Can a variable be declared as both const and volatile

True
False

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Multiple choice technology programming languages

Which of the below symbol is used to make comments in C language?

//
#
!!
<!--

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Multiple choice technology programming languages

public abstract class AbstractTest { public int getNum() { return 45; } public abstract class Bar { public int getNum() { return 38; } } public static void main(String[] args) { AbstractTest t = new AbstractTest() { public int getNum() { return 22; } }; AbstractTest.Bar f = t.new Bar() { public int getNum() { return 57; } }; System.out.println(f.getNum() + " " + t.getNum()); } }

57 22
45 38
45 57
D. An exception occurs at runtime

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Multiple choice technology programming languages

class Plane { static String s = "-"; public static void main(String[] args) { new Plane().s1(); System.out.println(s); } void s1() { try { s2(); } catch (Exception e) { s += "c"; } } void s2() throws Exception { s3(); s += "2"; s3(); s += "2b"; } void s3() throws Exception { throw new Exception(); } }

-
-c
-c2
-2c
-c22b
-2c2b

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Multiple choice technology programming languages

class Loopy { 2. public static void main(String[] args) { 3. int[] x = {7,6,5,4,3,2,1}; 4. // insert code here 5. System.out.print(y + " "); 6. } 7. } }

for(int y : x) {
for(x : int y) {
int y = 0; for(y : x) {
for(int y=0, z=0; z<x.length; z++) { y = x[z];
for(int y=0, int z=0; z<x.length; z++) { y = x[z];
int y = 0; for(int z=0; z<x.length; z++) { y = x[z];

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