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[LEFT]//the main process used in this program its Binet's formula
//for the nth Fibonacci number
//you can find it on
//http://www.mcs.surrey.ac.uk/Personal/R.Knott/Fibonacci/fibFormula.html?n=120
#include<stdio.h>
#include<math.h>
int main()
{
unsigned i;
int n;
printf("*This program calculate the nth Fibonacci number*\n");
printf(" n= 0,1,2,....\n");
printf(" Enter number: ");
scanf("%d",&n);
printf("%d\n",n);
i=(1/sqrt(5))*(pow(((1+sqrt(5.0))/2),n)-pow(((1-sqrt(5.0))/2),n));
printf("%d",i);
return 0;
}[/LEFT]
كود:
[LEFT]gcc -Wall "fibonacci.c" -o fibonacci (in directory: /home/alsadk) /tmp/ccVTbhN7.o: In function `main': fibonacci.c:(.text+0x74): undefined reference to `pow' fibonacci.c:(.text+0x94): undefined reference to `pow' collect2: ld returned 1 exit status Compilation failed. [/LEFT]
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