In case of the following type conversions, what is the output of the program?
#include <iostream>

int main() {
    float a = 256.5;
    unsigned char b = static_cast<unsigned char>(a);
    a += b + 1.f;
    std::cout << static_cast<int>(a);
Floating-integral conversions
An rvalue of a floating-point type can be converted to an rvalue of an integer type. The conversion truncates; that is, the fractional part is discarded. The behavior is undefined if the truncated value cannot be represented in the destination type.

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