floating point error
hi!
got some problems with inversing numbers. Everytime i compile and run, the floating point variable (inverse) gives a zero. Tried using different compilers and they give the same result. Any ideas?
unsigned int k, x, factorial_x=1, sum=0;
float inverse;
for(k=5; k>=1; k--){
for(x=k; x>=1; x--)
factorial_x *= x;
inverse= 1/factorial_x;
factorial_x = 1;
printf("%f", inverse);
}
If you divide one integer by another, you'll get an integer as the result, regardless of the type of variable you're storing it in. Try -
inverse= 1./factorial_x;
Try this:
That's All!Code:# include <stdio.h> # include <conio.h> int main() { int k, x; float inverse, factorial_x=1; clrscr(); for(k=5; k>=1; k--) { for(x=k; x>=1; x--) { factorial_x *= x; inverse = 1 / factorial_x; } factorial_x = 1; printf("%f\n", inverse); } getch(); return 0; }
Current projects:
1) User Interface Development Kit (C++)
2) HTML SDK (C++)
3) Classes (C++)
4) INI Editor (Delphi)
just change a bit instead of chaanging whole program
changed code is here:
unsigned int k, x, factorial_x=1, sum=0;
float inverse;
for(k=5; k>=1; k--){
for(x=k; x>=1; x--)
factorial_x *= x;
inverse= (float)1/(float)factorial_x;
factorial_x = 1;
printf("%f", inverse);
}
