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  1. #include <stdio.h>
  2.  
  3. double mabs(double x){ return (x < 0)? -x : x; } 
  4.  
  5. int main(void) {
  6. 	double num = 8;
  7. 	int rootDegree = 3;
  8.  
  9. 	printf("Число, корень которого считаем а = %f\n", num); 
  10. 	printf("Корень степени n = %d\n", rootDegree); 
  11.  
  12. 	double eps = 0.00001;
  13. 	double root = num / rootDegree;
  14. 	double rn = num;
  15. 	int countiter = 0;
  16. 	while(mabs(root - rn) >= eps){
  17. 	    rn = num;
  18. 		for(int i = 1; i < rootDegree; i++){
  19. 			rn = rn / root;
  20. 		}
  21. 		root = 0.5 * ( rn + root);
  22. 		countiter++;
  23. 	}
  24.  
  25. 	printf("root = %f\n", root); 
  26. 	printf("Число итераций = %i\n", countiter); 
  27.  
  28. 	return 0;
  29. }
Success #stdin #stdout 0s 4520KB
comments (?)
stdin 
Standard input is empty
stdout 
Число, корень которого считаем а = 8.000000
Корень степени n = 3
root = 1.999998
Число итераций = 17
https://ideone.com/OUEzGA
language:
C (gcc 8.3)
created:
5 years ago
visibility:
public

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