问“程序已停止工作”

EN

#include<stdio.h>

double Combat(int x, int y, char mons[20]);


int  main(void)
{
    int monsters, i, target, alive;

    while(1)
    {
        printf("ENTERING COMBAT\n\nHow many monsters?> ");
        scanf(" %d", &monsters);
        char monster[monsters][20];
        int monstermaxhp[monsters];
        int monsterhp[monsters];
        for(i=0;i<monsters;++i)
        {
            printf("\n\nNO SPACES\n\nEnter Monster %d's name> ", i+1);
            scanf("%s", &monster[i]);
            printf("\n\nEnter %s's hitpoints> ", monster[i]);
            scanf("%d", &monstermaxhp[i]);
            monsterhp[i]=monstermaxhp[i];
        }
            alive=1;
            while(alive==1)
        {
          for(i=0;i<monsters;++i)
        {
            printf("\n\n%d:%s%3c%3d/%d", i+1, ' ',monsterhp[i],monstermaxhp[i]);
        }
        printf("\n\nSelect Target> ");
        scanf("%d", &target);
        i=target-1;
        monsterhp[i]=Combat(monsterhp[i],monstermaxhp[i],monster[i]);
        for(i=0;i<monsters;++i)
        {
            if(monsterhp[i]<=0)
                alive=0;
        }
        }
    }
    return(0);
}


double Combat(int x, int y, char mons[20])
{
    int damage, plrroll, monroll;

    printf("\nRoll for %s> ", mons);
    scanf("%d", &monroll);
    printf("\nRoll for Player> ");
    scanf("%d", &plrroll);
    if(plrroll>monroll)
    {
        printf("\nHIT! Roll for damage> ");
        scanf("%d", &damage);
        x=x-damage;
    }
    else
    {
        printf("\nMISS! :P\n");
    }
    return(x);
}