Question

用java程序编写1+3+5+7+9+...+99的值

用java程序编写1+3+5+7+9+...+99的值

Answer 1

public class Test {
public static void main(String args[]){
int x = 1;
int s = 0;
do{
s = s + x;
x = x + 2;
}while( x < 100 );
System.out.println("1+3+5+...+99= " + s );
}
}

Answer 2

public class test {

public static void main(String[] args) {

// TODO Auto-generated method stub

int sum = 0;

for(int i = 1; i < 100; i = i+2) {

sum = sum + i;

}

System.out.println(sum);

}

}

Answer 3

public static void main(String[] args) {
		int total = 0;
		for (int i = 1; i <= 99; i += 2)
			total += i;
		System.out.println(total);
	}