cstdio to stdio.h

[sirrunrun]

how to change the following code from C++ to C?
It is the code of acm:http://acm.hust.edu.cn/vjudge/contest/view.action?cid=18976#problem/J

#include <cstdio>

struct list{
        int father,length,child,next;
        int max1,where,max2;
};

int n;
list tree[10001];

int max(int x,int y) {
        if (x>y) return(x);
        return(y);
}

void init() {
        scanf("%d\n",&n);

        for (int i=2;i<=n;i++) {
                scanf("%d%d\n",&tree[i].father,&tree[i].length);
                tree[i].next=tree[tree[i].father].child;
                tree[tree[i].father].child=i;
        }
}

void dfs(int num) {
        int childnum=tree[num].child;

        while (childnum!=0) {
                dfs(childnum);
                if (tree[childnum].max1+tree[childnum].length>tree[num].max1) {
                        tree[num].max2=tree[num].max1;
                        tree[num].max1=tree[childnum].max1+tree[childnum].length;
                        tree[num].where=childnum;
                }
                else if (tree[childnum].max1+tree[childnum].length>tree[num].max2)                                      
                        tree[num].max2=tree[childnum].max1+tree[childnum].length;

                childnum=tree[childnum].next;
        }
}

void work() {
        dfs(1);

        for (int i=1;i<=n;i++) {
                int temp1=i,sum=0,ans=tree[i].max1;

                while (tree[temp1].father!=0) {
                        sum+=tree[temp1].length;
                        if (tree[tree[temp1].father].where!=temp1)
                                ans=max(ans,tree[tree[temp1].father].max1+sum);
                        else
                                ans=max(ans,tree[tree[temp1].father].max2+sum);
                        temp1=tree[temp1].father;
                }

                printf("%d\n",ans);
        }
}

int main() {
        init();
        work();
}

[MiiNiPaa]

It does not uses any C++ features and is written in C subset of C++.

[Gamer2015]

note:
cstdio and stdio.h are both the same

[sirrunrun]

It is C.NO SUCH file or directory for cstdio

[MiiNiPaa]

You wrote solution yourself in thread title.

[Gamer2015]

yeah, it is no such file or directory for the gcc compiler because it's not in the gcc compiler path but the content is nearly the same (and both are C-compatible)

[sirrunrun]

so how can I change the code so that it can be compile in C???

[MikeyBoy]

That question has already been answered by MiiNiPaa.

[sirrunrun]

i have tried ,cannot compile ar

[Peter87]

What error do you get?

[Gamer2015]

try changing this line
#include <cstdio>

to this:
#include <stdio.h>

[sirrunrun]

i have tried, you can compile in ideone.com...
there are so many error

[Gamer2015]

Did it work when compiling in c++?

[Peter87]

You need to add the struct keyword before list

struct list tree[10001];

or you can use typedef when defining the struct.

typedef struct {
        int father,length,child,next;
        int max1,where,max2;
} list;

I'm no expert on C but this seems to work with Ideone if you compile as C99 strict. If you want it to compile with older C versions you need to make a few more changes to the code.

[sirrunrun]

ok thanks