Ta Summary of square root iteration formula of C Language

0.00001 POW (10,-5) 1e-5

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# Include <stdio. h>

# Include <math. h>

Void main ()

{Double A, x1, x2;

Printf ("input a value :");

Scanf ("% lf", & );

X1 = A/2;

X2 = (X1 + A/X1)/2;

For (; FABS (x2-x1)> = 0.00001 ;)

{

X1 = x2;

X2 = (X1 + A/X1)/2;

}

Printf ("output the square root of a % F \ n", X2 );

}

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# Include <stdio. h>

# Include <math. h>

Void main ()

{Double X2, X1,;

Printf ("enter a = ");

Scanf ("% lf", & );

X1 = A/2;

X2 = (X1 + A/X1)/2;

Do

{

X1 = x2;

X2 = (X1 + A/X1)/2;

} While (FABS (x2-x1)> = 1e-5 );

Printf ("the square root of A is % lf \ n", X2 );

}

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# Include <stdio. h>

# Include <math. h>

Void main ()

{Double A, x1, x2;

Printf ("input a value μ :");

Scanf ("% lf", & );

X1 = A/2;

X2 = (X1 + A/X1)/2;

While (FABS (x2-x1)> = POW (10,-5 ))

{

X1 = x2;

X2 = (X1 + A/X1)/2;

}

Printf ("output the square root of a % lf \ n", X2 );

}

Do While and while do are different only when the first condition is not met

The above programs should add an if (a> 0) judgment.