nudt-compiler-cpp/test/test_case/case_lab3_1/float_calc.sy

int main() {
    float a = 1.5;
    float b = 2.0;
    putfloat(a + b); putch(32);
    putfloat(a - b); putch(32);
    putfloat(a * b); putch(32);
    putfloat(a / b); putch(10);
    return 0;
}