absolute value of float

abs_float.c

#include<stdio.h>


int main()
{
    float x;
    printf("Enter the float number:\n");
    scanf("%f", &x);
    // copy and re-interpret as 32 bit integer
    int casted_to_int = *(int*)&x;// float pointer is converted to an integer pointer and dereferenced.
    // clear highest bit
    casted_to_int&=0x7FFFFFFFF;
    // re-interpret as float
    printf("Absolute value of float is %d \n",*(float*)&casted_to_int);

    return 0;
}