向大佬求助，是哪里写错了，谢谢友友

123456rita @ 2022-10-15 13:14:40

#include<stdio.h>
int main()
{
    int i=0;
    int L,m;
    int initial,end;
    int a[L+1];
    int cnt=0;
    scanf("%d %d",&L,&m);
    for(i=0;i<L+1;i++){
        a[i]=0;
    }
    for(i=0;i<m;i++){
        scanf("%d %d",&initial,&end);
    if(i>=initial&&i<=end,i++){
        a[i]=1;
    }
}
    for(i=0;i<L+1;i++){
    if(a[i]==0){
        cnt++;
    }
}
    printf("%d",cnt);
    return 0;
}

by _ZXWDS @ 2022-10-15 13:17:54

建议说一下各部分是干嘛的

by X_ray_Of_the_way @ 2022-10-15 13:49:48

if(i>=initial&&i<=end,i++){ a[i]=1; } if 改为for 试试

by X_ray_Of_the_way @ 2022-10-15 13:50:25

for(int i=initial;i<=end;i++)

by X_ray_Of_the_way @ 2022-10-15 13:53:37

@123456rita 在吗？

by X_ray_Of_the_way @ 2022-10-15 13:57:40

我先参加月赛了，待会再看看

by 123456rita @ 2022-10-15 19:38:21

@X_ray_Of_the_way 好的，谢谢

by X_ray_Of_the_way @ 2022-10-16 07:20:48

你看看我的代码：

#include<iostream>
#include<math.h>
#include<string.h>
#include<algorithm>
#include<iomanip>
#include<stack>
#include<queue>
#include<deque>
#include<vector>
#include<map>
#include<set>
using namespace std;
const int N=1e5+10;
bool tree[10001];
int n,l; 
int main(){
    cin>>l>>n;
    for(int i=1;i<=n;i++){
        int x,y;
        cin>>x>>y;
        for(int i=x;i<=y;i++){
            tree[i]=1;
        }
    }
    int sum=0;
    for(int i=0;i<=l;i++){
        if(!tree[i])
        sum++;
    }
    cout<<sum<<endl;
    return 0;
}

by X_ray_Of_the_way @ 2022-10-16 07:21:57

应该是你用了一个变量来定义数组的问题