Square Root of a number without using math.h function
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#include <stdlib.h> | ||
void main() { | ||
int number; | ||
float temp, sqrt; | ||
scanf("%d", &number); | ||
// store the half of the given number e.g from 256 => 128 | ||
sqrt = number / 2; | ||
temp = 0; | ||
// Iterate until sqrt is different of temp, that is updated on the loop | ||
while(sqrt != temp){ | ||
// initially 0, is updated with the initial value of 128 | ||
// (on second iteration = 65) | ||
// and so on | ||
temp = sqrt; | ||
// Then, replace values (256 / 128 + 128 ) / 2 = 65 | ||
// (on second iteration 34.46923076923077) | ||
// and so on | ||
sqrt = ( number/temp + temp) / 2; | ||
} | ||
printf("%.0f",sqrt); | ||
} |
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