finding 100!

[vgoel38]

there is some compilation error in it..not able to find..
http://ideone.com/Pvped
plzz..hv a look

[o3hC5Di1]

Hi there,

You can't do this:

//line 9
arr[160]={0};

Because you have already initialised the array on line 4.
Remove that line and it should compile: http://ideone.com/46p21

All the best,
NwN

[vgoel38]

yup..m waiting

[Aceix]

Remove the underlined one:
arr[160]={0};

[vgoel38]

actually i want to loop arr[160]={0}; so that array gets initialised to 0 every time loop runs..so..i cant delete this line

P.S. see ur own code..output is wrong..
for input
2
100
100
output shud be same for both 100's.

[vgoel38]

leave everything said above..tell me whats wrong with this code
http://ideone.com/Pvped

[o3hC5Di1]

You can't "re-initialise" a variable - that's the point of it - it only happens initially on creation of it.

If you want to fill it with zero values, you need a separate for loop:

for (int i=0;i<160;i++)
    arr[i] = 0;

You asked me about compilation errors, I didn't check what the program does and if it's output is correct if all you ask is "how can i make this compile".

If you have any further questions, please be a little bit more specific on what it is you're trying to do with the program.

All the best,
NwN

[vgoel38]

okay..so u mean to say i cant do the following??

int arr[160]=0;
//somewhere later in program
arr[160]=0;

[o3hC5Di1]

No - you can perfectly well do that.

You are misunderstanding the difference between initialisation and altering values.
Initialising the array:

int arr[160] = {0};

This means "create an array of 160 values of type int and give the first element a value of zero".

Altering a value in the array:
arr[160] = 0;

This means "set the value at position 160 in array arr to 0"

Hope that clears it up for you.

All the best,
NwN

[vgoel38]

sry ...i meant that can i do the following?

int arr[160]={0};
//somewhere later in program
arr[160]={0};

[o3hC5Di1]

No, that's not possible - again: curly braces are only valid whilst initialising.

If you want to reset the first value of arr to 0:
arr[160] = 0;

If you want to reset all the values of arr to zero:

for (int i=0;i<160;i++)
    arr[i] = 0;

All the best,
NwN

[vgoel38]

ok..thnk u so much..so i conclude curly brackets cn be used only while initialising and not in middle of code.

thnk u so much

[o3hC5Di1]

Correct.

Curly braces allow you to set multiple values at once, which can only be done at initialisation:

int arr[3] = {0,1,2}; //create array of 3 ints and fill it with values 1,2,3 

After that, you have to access all the values individually as such:

arr[0] //=value 0 in array above

All the best,
NwN