我的第一个和第二个C语言程序

花了我超过6个小时呢，不容易哦。

#include<stdio.h>
#include<string.h>
int main(void) {
                char *read=(char*)malloc(100);
                char *maxLength=(char*)malloc(100);

        while (gets(read) != NULL) {
                printf("the read string is %s \r\n", read);
                if (strcmp(read, "q") == 0)
                break;
                printf("strlen(read) === %d\n",strlen(read));
                printf("strlen(maxLength)=== %d\n",strlen(maxLength));

                if (maxLength==NULL||strlen(read) > strlen(maxLength)) {
                      maxLength=read;
                        //strcpy(maxLength,read);
                }
        }

        printf("the string which have max length is %s \r\n", maxLength);
}

#include<stdio.h>
#include<string.h>
int main(void) {
        char *read[10];
        char *temp;
        int s_length[10];
        int i = 0;
        int k = 0;
        int length=0;

        for (i=0;i<10;i++)
                read[i]=(char*)malloc(100);

        i=0;
        while ((i < 10) && (scanf("%s",read[i]) == 1)) {
                s_length[i]=strlen(read[i]);
                printf("length == %d\n",s_length[i]);
                i++;
        }


        for (i = 0; i < 10; i++) {
           for (k = i; k < 10; k++) {
                // printf("i=%d.leni=%d,k=%d,lenk=%d\r\n",i,s_length[i],k,s_length[k]);
                if (s_length[i] > s_length[k]) {
                        temp = read[i];
                        read[i] = read[k];
                        read[k] = temp;

                        length=s_length[i];
                        s_length[i]=s_length[k];
                        s_length[k]=length;

                        //      printf("read[i]=%s\r\n",read[i]);


                }
          }
        //   printf("read[i]=%s\r\n",read[i]);
       }
        for (i = 0; i < 10; i++) {
                printf("%s \r\n", read[i]);
        }
}