A 3 B 128 A1 5 B1 256 int random4() { long x;

float random4=0.0;

x=rand();

x=A*x%B;

/*if(x>0) x=x+M;else*/

random4=(float)x/B;

if(random4>0.45) return 1;

else return 0;

/*return random4;*/

} double random3() {

long x;

double random3=0.0;

x=rand();

x=A1*x%B1;

random3=(float)x/B1;

return random3;

};

本人初学，请哪位大侠指点语句的涵义？希望详细些 多谢！