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38 lines
643 B
C
38 lines
643 B
C
/*
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Write a program using recursive function 'power' to compute x^n
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power(x,n) = 1 , if n = 0
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power(x,n) = x , if n = 1
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power(x,n) = x * power(x,n-1) , otherwise
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*/
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#include <stdio.h>
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#include <conio.h>
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float power(float x, int n)
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{
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if(n==0)
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return 1 ;
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else if(n==1)
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return x ;
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else
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return ( x * power(x, n-1) ) ;
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}
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void main()
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{
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float x ;
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int n ;
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clrscr() ;
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printf("Enter x and n: ") ;
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scanf("%f %d", &x, &n) ;
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printf("x raise to n = %f", power(x,n) ) ;
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getch() ;
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}
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/*
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Output:
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Enter x and n: 2.5 3
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x raise to n = 15.625000
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*/
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