Question

#include<stdio.h>
#include<string.h>
#include<stdlib.h>
char* get_page(char *s)
{
FILE *fp = fopen(s,"r");
    if(fp==NULL){
        printf("file not found\n");
    }else{
        char c;
        char *a;
        int y,i;
        a=(char *) malloc(sizeof(char)*100000);
        for(i=0;(c=fgetc(fp))!=EOF;i++){
            a[i]=c;
        }
        a[i+1]='\0';
        fclose(fp);
        return a;
    }
}
char** get_all_links(char *b)
{
    //printf("%s",b);
    int u,i=0,j=0,t,z;
    char **f;
    f=(char **) malloc(sizeof(char *)*100);
    u=strlen(b);
    for(t=0;t<u;t++){
            if(b[t]=='<' && (b[t+1]=='A' || b[t+1]=='a')){
                f[j]=(char *) malloc(sizeof(char)*10000);
                for(z=t+9;b[z]!='"';z++){
                    f[j][i++]=b[z];
                }
                i=0;
                j++;
            }
    }
    printf("%d\n",j);
    if(j==0){
        f[0]=NULL;
    }else{
        f[j+1]=NULL;
    }
    return f;
}
int main(){
    char f[100],*p,*l,*w,**k,**links;
    scanf("%s",f);
    int loop_count=0,ii,prev_links=0,check=0,get_link=1,o,u;
    k=NULL;
    while(f!=NULL){
        //printf("in while 1\n");
    printf("%s\n",f);
    p=get_page(f);
    //printf("%s",p);
    if(k!=NULL)
        free(k);
    k=get_all_links(p);
    //printf("\n");
    int count_for_links=0,x=0;
    while(k[x]!=NULL){
        //printf("in while\n");
        count_for_links++;
        x++;
    }
    printf("%d\n",count_for_links);
    prev_links=prev_links+count_for_links;
    if(loop_count==0){
        //printf("in loop count ==0\n");
    links=(char **) malloc(sizeof(char *)*(count_for_links+1));
    links[0]=(char *) malloc(sizeof(char)*strlen(f));
    strcpy(links[0],f);
    //printf("%s\n",links[0]);
    for(ii=0;ii<count_for_links;ii++){
        //printf("in for ii<count_for_links\n");
        links[ii+1]=(char *) malloc(sizeof(char)*strlen(k[ii]));
        strcpy(links[ii+1],k[ii]);
        printf("%s\n",links[ii+1]);
    }
    }else if(loop_count>0){
        //printf("%s\n",k[0] );
        for(o=0;(k[o]!=NULL && o<count_for_links);o++){
            printf("%s",k[o]);
            //printf("check extra %d\n",loop_count);
            for(u=0;u<=ii;u++){
                if(strcmp(k[o],links[u])==1){
                    check=1;
                    printf("the war");
                }
            }

            if(check==0){
            //  printf("in link not found\n");
                links =(char **) realloc(links,(sizeof(char *)));
                links[ii+1]=(char *) malloc(sizeof(char)*strlen(k[o]));
                ii++;
                strcpy(links[ii],k[o]);
            }   
        }
    }
    printf("OUT");
    strcpy(f,links[get_link]);
    get_link++;
    loop_count++;
}
int q;
printf("helloooooo");
for(q=0;links[q]!=NULL;q++){
printf("%s",links[q]);
}
    return 0;
}

/ *在这个代码中，k数组表示我从html获得的链接，并且第一次存储在链接数组中，并且从下次检查其他页面时，如果链接相同，则省略相同的链接并采取其他链接到数组* /

Answer 1

如果您的文件大于100.000，您将覆盖：

a = (char *)malloc(sizeof(char)* 100000);   <--
    for (i = 0; (c = fgetc(fp)) != EOF; i++){
        a[i] = c;
    }

你应该使用文件大小

我执行此代码时遇到分段错误（核心转储）...

1 个答案: