sqrt()

We will get Square root of a given number by using sqrt() function. We can format the out put by using printf().
#include <stdio.h>
#include <math.h>
int main(void){
float num; // num is declared as float variable
num=225;     // data is stored
printf("num = %.4f", sqrt(num)); // final output
return 0;
}
The above code will give this output.
num = 15.0000

Example integer output

#include 
#include 
int main(void){
int num; // num is declared as integer  variable
num=sqrt(625);     // data is stored
printf("num = %d", num); // final output
return 0;
}
Output is here
num = 25
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