i can't fix it! its driving me nuts

faxtoaster · 07-10-2003, 05:19 PM

This is supposed to compute iMax^3 + iMax-1^3 + iMax-2^3...1^3
Instead, it doesn't

. How can i add up the terms in my for loop? It is setup so it only adds iMax^3 and iMax-1^3, but i don't know how to fix it.

#include <stdio.h>
#include <math.h>
void cube(void);
int main(void)
{
cube();
return 0;
}

void cube(void)
{ int iMax, iAns, iCube, iNumber;
printf("input max integer: ");
scanf("%i", &iMax);
iAns = pow(iMax,3);
for (iNumber=1; iNumber <iMax; iNumber++)
iCube = pow(iNumber,3) + pow(iMax,3);
printf("Cube is : %i", iCube);
}

quzah · 07-10-2003, 05:41 PM

1) Stop spamming the board. Use your existing thread.
2) Use code tags. See left if you don't know how.
3) Why are you using the power function?

Code:

int cubethis( int tc )
{
    return tc * tc * tc;
}

int foo( int f )
{
    int x,y=0;
    for( x = f; x > 0; x-- )
        y += cubethis( x );
    return y;
}

Try something like that. That should give you:

x = foo( 5 );
x = 5^3 + 4^3 + 2^3 + 1^3;

Quzah.

faxtoaster · 07-10-2003, 05:46 PM

thanks for the help, i'll see if that works. sorry for spamming the board i'm new at this.

07-10-2003, 05:19 PM	#1
faxtoaster Registered User Join Date: Jul 2003 Posts: 21	i can't fix it! its driving me nuts This is supposed to compute iMax^3 + iMax-1^3 + iMax-2^3...1^3 Instead, it doesn't . How can i add up the terms in my for loop? It is setup so it only adds iMax^3 and iMax-1^3, but i don't know how to fix it. #include <stdio.h> #include <math.h> void cube(void); int main(void) { cube(); return 0; } void cube(void) { int iMax, iAns, iCube, iNumber; printf("input max integer: "); scanf("%i", &iMax); iAns = pow(iMax,3); for (iNumber=1; iNumber <iMax; iNumber++) iCube = pow(iNumber,3) + pow(iMax,3); printf("Cube is : %i", iCube); }
faxtoaster is offline

07-10-2003, 05:41 PM	#2
quzah +++ OK NO CARRIER Join Date: Oct 2001 Posts: 10,639	1) Stop spamming the board. Use your existing thread. 2) Use code tags. See left if you don't know how. 3) Why are you using the power function? Code: int cubethis( int tc ) { return tc * tc * tc; } int foo( int f ) { int x,y=0; for( x = f; x > 0; x-- ) y += cubethis( x ); return y; } Try something like that. That should give you: x = foo( 5 ); x = 5^3 + 4^3 + 2^3 + 1^3; Quzah. __________________ Hundreds of thousands of dipshits can't be wrong. Are you up for the suck?
quzah is offline

07-10-2003, 05:46 PM	#3
faxtoaster Registered User Join Date: Jul 2003 Posts: 21	thanks for the help, i'll see if that works. sorry for spamming the board i'm new at this.
faxtoaster is offline

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