Even after typecasting at line 18, why does it keep printing 0 as output for any given input ?

Question

#include <stdio.h>
#include <math.h>

int main() {
int x,x1,y,y1;
float z;
printf("Enter the first cartesian point ");
scanf("%d %d",&x,&y);
printf("%d %d\n",x,y);
printf("Enter the second cartesian point ");
scanf("%d %d",&x1,&y1);
printf("%d %d\n",x1,y1);

int a = pow(x1-x,2);
int b = pow(y1-y,2);

z = (float)sqrt(a+b);
printf("distance between the two points= %d",z);
return 0;
}

Answer 1

see sqrt definition:
double sqrt (double x );
https://en.m.wikibooks.org/wiki/C_Programming/math.h/sqrt

so typecast like so:
int x = 5;
double y = sqrt( (double) x )