I'm reading the second edition of K&R book and one of the exercises requires printing all maximum integer values defined in limits.h header. However, this...
printf("unsigned int: 0 to %d\n", UINT_MAX);
... outputs ... |
The program requires an input of an arbitrary large unsigned integer which is expressed as one string in base 10. The outputs is another string that expresses the integer in base ... |
I am looking for an efficient (optionally standard, elegant and easy to implement) solution to multiply relatively large numbers,and store the result into one or several integers :
Let say I have ... |
I am working on a project where I need to crunch large integers (like 3^361) with absolute precision and as much speed as possible. C is the fastest language I am ... |
|
jackie said: hi,all: one of my pals want to use integers of about 15 digits to do some calculation,as far as i know,c99 supports long long and that type would be enough,but,many compiler don't support long long,so is there any other way to tackle this problem,thx.. Obtain, or write, a "bignum" library. The two bignum libraries most commonly recommended are Miracl ... |
I didn't really have a reason for first and second to be pointers... except that it was the only way to get some kind of functionality out of the program... but now that i have the strings converted to integers I think i should be able to use just a regular int. I'm going to keep working this part alone and ... |
|
in my script, a person is to type in the number 9999999999 9999999999 is saved as file1 (works fine) 9999999999 is loaded as integer1 integer2 is set equal to integer1 integer2 is saved as file2 But,the thing is that file2 is "1410065407" when it should be "9999999999" file1 is how i wanted it (9999999999) is the number too big or somthing? ... |
If I have a value, say 13849, I can assign it to x and test if it divisible by 37 by something like if (x%37==0)... and I can test if it's a square by something like int y; y=sqrt(x); if (x==y*y)... But my question is, how can I do these two things (preferably as simply and efficiently as possible) if my ... |
Why does Platform SDK define union LARGE_INTEGER in such a way? ntdef.h defines the union LARGE_INTEGER as follows: typedef union _LARGE_INTEGER { struct { ULONG LowPart; LONG HighPart; }; struct { ULONG LowPart; LONG HighPart; } u; LONGLONG QuadPart; } LARGE_INTEGER; Though I fully understand what union is, I cannot think out the reason why it adds struct u into the ... |
Hi all I have an large integer in this format x1*256^5 + x2*256^4 + x3*256^3 + x4*256^2 + x5*256 + x6 now I must convert it to this format y1*900^4 + y2*900^3 + y3*900^2 + y4*900 + y5 x1-x5 is given.I must get y1-y4 from it. How can I do this on my 32bit PC? Sorry for that my English is ... |
I need to accept large intger of say 15 digits. how to do that except using array? even if i use array, can i use getw() for accepting the whole number at one turn but storing the digits at different positions at array(i.e. one digit in each room of array) ? is there any other way? |
|
|
The standards actually specifies that the range of an int is INT_MIN to INT_MAX. INT_MIN and INT_MAX are implementation defined (i.e. they depend on the compiler, operating system, etc). The 1999 C standard specifies (in effect, the wording is slightly different) that INT_MIN will not be greater than -32767 and INT_MAX shall not be less than +32767. This translates, practically, to ... |
|
I'm trying to do the equation num = a^b % c; a = 10354 b = 5 c = 29177 Unfortunately the result of 10354^5 is too large for the integer data type and the mod function doesn't work on double data types. I was wondering if there is some way to execute that equation properly in C. |
Hey, I was wondering if I could get some help, I'm just learning C++ I've been teaching myself and have started to learn functions. Here's the source code for my test program: Code: #include #include #include using namespace std; void fibonacci(int x){ int a = 0; int b = 1; int c; while (b < x) { c ... |
# include # include # include # include typedef struct poly { int *coeff; int degree; }poly; void init(poly *, char *); void add (poly ,poly ,poly *); int main(void) { char num1[80],num2[80],*sum; int i; poly p1,p2,p3; printf("\n\n Program Large Integer Arithmatics :- ADDITION"); printf("\n\n Enter 1st Number:"); fscanf(stdin,"%s",num1); printf("\n\n Enter 2nd Number:"); fscanf(stdin,"%s",num2); init(&p1,num1); init(&p2,num2); add(p1,p2,&p3); ... |
You might look at it as an array of integers. Each digit in the number, then is assigned to an element of the array: 456 becomes a[4][5][6] in it's first three elements, or, a[0] = 4, a[1] = 5, and a[2] = 6. You can do about the same thing, using a char array, but it's just a bit more complicated. ... |
|
|
|
One of the structure is named and the other isn't. If you want to pass the structure to some function, you would use the named structure. To directly use the members of the structure it would be more convenient to use the unnamed structure directly. If your compiler supports 64-bit numbers you can use this union to easily split the 64-bit ... |