continue和break、return 0

灰太狼 2022-06-07 04:37 254阅读 0赞

#include<iostream>
    using namespace std;
    int main()
    {
    	int i;
    	for(i=1;i<=5;i++)
    	{
    		if(i==1) continue;//跳过本次循环，进入下一次循环 
    		cout<<i<<endl;
    	}
    	return 0;
    }

continue：跳过本次循环

![20171010212206351][]

#include<iostream>
    using namespace std;
    int main()
    {
    	int i;
    	for(i=1;i<=5;i++)
    	{
    		if(i==3) break;//跳过整个循环 
    		cout<<i<<endl;
    	}
    	return 0;
    }

break：跳过整个循环

![20171010212328268][]

#include<iostream>
    using namespace std;
    int main()
    {
    	int i,j;
    	for(i=1;i<=5;i++)
    	{
    		for(j=1;j<=4;j++)
    		{
    			if(j==1) continue;
    			cout<<"i="<<i<<" "<<"j="<<j<<endl;
    		}
    		cout<<endl;
    	}
    	return 0;
    }

当j=1时，跳过j=1的情况，j=2,3,4的情况不变。

![20171010212434205][]

#include<iostream>
    using namespace std;
    int main()
    {
    	int i,j;
    	for(i=1;i<=5;i++)
    	{
    		for(j=1;j<=4;j++)
    		{
    			if(j==3) break;
    			cout<<"i="<<i<<" "<<"j="<<j<<endl;
    		}
    		cout<<endl;
    	}
    	return 0;
    }

当j==3时，后面的循环全部中断，跳出内循环（即第二个for循环）

![20171010212643527][]

> continue：如果满足条件，continue后面的语句不执行，跳过一次循环。
> 
> break:如果满足条件，跳过整个循环，后面的语句不执行。
> 
> return 0:跳过整个程序，是程序结束的标志。

#include<iostream>
    using namespace std;
    int main()
    {
    	int k = 4, n = 0;
    	while(n < k)
    	{
    		n++;
    		printf("%d %d\n",n,k); 
    		if(n%3!=0) continue;
    		k--;
    		printf("hhhhh\n");
    	}
    	cout << n << "," << k << endl; 
    	return 0;
     }

![20190805164054717.png][]

#include<iostream>
    using namespace std;
    int main()
    {
    	int k = 4, n = 0;
    	while(n < k)
    	{
    		n++;
    		printf("%d %d\n",n,k); 
    		if(n%3!=0) break;
    		k--;
    		printf("hhhhh\n");
    	}
    	cout << n << "," << k << endl; 
    	return 0;
     }

![20190805164221499.png][]

#include<iostream>
    using namespace std;
    int main()
    {
    	int k = 4, n = 0;
    	while(n < k)
    	{
    		n++;
    		printf("%d %d\n",n,k); 
    		if(n%3!=0) return 0;
    		k--;
    		printf("hhhhh\n");
    	}
    	cout << n << "," << k << endl; 
    	return 0;
     }

![2019080516435595.png][]

[20171010212206351]: /images/20220607/939d1b6226714406b5e6ee19fa5292bd.png
[20171010212328268]: /images/20220607/bfc94aba077b40f7875bc6bbc0eb8ea6.png
[20171010212434205]: /images/20220607/112c56c4c7164cda9197158a1154b855.png
[20171010212643527]: /images/20220607/f1fda27400734783befee6d6e0579eca.png
[20190805164054717.png]: /images/20220607/2cf4844f7a4a4b0eb696db1ce323b4b3.png
[20190805164221499.png]: /images/20220607/bdeaf69e65fa451ebd3f90737ff7a7aa.png
[2019080516435595.png]: /images/20220607/68c955ae51b14edf9c42cb21b8e99ab4.png