c - 如何创建具有特定长度的单词列表

Question

我目前正在编写 C 编程来创建具有特定长度的单词列表。

例如，我有一串十个字母

ABCDEFGHIJ

想要创建一个长度为 2 的单词列表

AB、BC、CD、DE、EF、FG、GH、HI、IJ。

现在我只能创建

AB、CD、EF、GH、IJ

用我的编码

#include<stdio.h>
#include<string.h>
int main()
{
    /*q=length of query sequence, W=length of substring, t=(q-w)+1*/
    char array[5][3],length[3];
    int i=1;
    FILE *input;

    input=fopen("string.txt", "r");

    /*stores and prints the data from the string*/
        while(fgets(length,3,input))
        {
            strcpy(array[i],length);
            printf(">%d\n%s\n\n",i,array[i]);
            i++;
         }
    return 0;
}

如何将数组指向从第二个字母而不是第三个字母开始的下一个单词的位置？

提前谢谢您。

Answer 1

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(void)
{
char wmers[115];
int i = 1, j = 2;

FILE *input = NULL;
FILE *output;

if (!(input = fopen("exon11.txt", "r"))) {
    // Error
    return (EXIT_FAILURE);
}

if (!fgets(wmers,115,input)) {
    // Error ?
}
printf(">%d\n%s\n\n",i,wmers);
i++;
output=fopen("2.txt", "w");
fputs(wmers,output);
for(int c = fgetc(input); c != EOF; c = fgetc(input))
    {
        wmers[0] = wmers[1];
        wmers[1] = wmers[2];
        wmers[2] = wmers[3];
        wmers[3] = wmers[4];
        wmers[4] = wmers[5];
        wmers[5] = wmers[6];
        wmers[6] = wmers[7];
        wmers[7] = wmers[8];
        wmers[8] = wmers[9];
        wmers[9] = wmers[10];
        wmers[10] = wmers[11];
        wmers[11] = wmers[12];
        wmers[12] = wmers[13];
        wmers[13] = wmers[14];
        wmers[14] = wmers[15];
        wmers[15] = wmers[16];
        wmers[16] = wmers[17];
        wmers[17] = wmers[18];
        wmers[18] = wmers[19];
        wmers[19] = wmers[20];
        wmers[20] = wmers[21];
        wmers[21] = wmers[22];
        wmers[22] = wmers[23];
        wmers[23] = wmers[24];
        wmers[24] = wmers[25];
        wmers[25] = wmers[26];
        wmers[26] = wmers[27];
        wmers[27] = wmers[28];
        wmers[28] = wmers[29];
        wmers[29] = wmers[30];
        wmers[30] = wmers[31];
        wmers[31] = wmers[32];
        wmers[32] = wmers[33];
        wmers[33] = wmers[34];
        wmers[34] = wmers[35];
        wmers[35] = wmers[36];
        wmers[36] = wmers[37];
        wmers[37] = wmers[38];
        wmers[38] = wmers[39];
        wmers[39] = wmers[40];
        wmers[40] = wmers[41];
        wmers[41] = wmers[42];
        wmers[42] = wmers[43];
        wmers[43] = wmers[44];
        wmers[44] = wmers[45];
        wmers[45] = wmers[46];
        wmers[46] = wmers[47];
        wmers[47] = wmers[48];
        wmers[48] = wmers[49];
        wmers[49] = wmers[50];
        wmers[50] = wmers[51];
        wmers[51] = wmers[52];
        wmers[52] = wmers[53];
        wmers[53] = wmers[54];
        wmers[54] = wmers[55];
        wmers[55] = wmers[56];
        wmers[56] = wmers[57];
        wmers[57] = wmers[58];
        wmers[58] = wmers[59];
        wmers[59] = wmers[60];
        wmers[60] = wmers[61];
        wmers[61] = wmers[62];
        wmers[62] = wmers[63];
        wmers[63] = wmers[64];
        wmers[64] = wmers[65];
        wmers[65] = wmers[66];
        wmers[66] = wmers[67];
        wmers[67] = wmers[68];
        wmers[68] = wmers[69];
        wmers[69] = wmers[70];
        wmers[70] = wmers[71];
        wmers[71] = wmers[72];
        wmers[72] = wmers[73];
        wmers[73] = wmers[74];
        wmers[74] = wmers[75];
        wmers[75] = wmers[76];
        wmers[76] = wmers[77];
        wmers[77] = wmers[78];
        wmers[78] = wmers[79];
        wmers[79] = wmers[80];
        wmers[80] = wmers[81];
        wmers[81] = wmers[82];
        wmers[82] = wmers[83];
        wmers[83] = wmers[84];
        wmers[84] = wmers[84];
        wmers[85] = wmers[86];
        wmers[86] = wmers[87];
        wmers[87] = wmers[88];
        wmers[88] = wmers[89];
        wmers[89] = wmers[90];
        wmers[90] = wmers[91];
        wmers[91] = wmers[92];
        wmers[92] = wmers[93];
        wmers[93] = wmers[94];
        wmers[94] = wmers[95];
        wmers[95] = wmers[96];
        wmers[96] = wmers[97];
        wmers[97] = wmers[98];
        wmers[98] = wmers[99];
        wmers[99] = wmers[100];
        wmers[100] = wmers[101];
        wmers[101] = wmers[102];
        wmers[102] = wmers[103];
        wmers[103] = wmers[104];
        wmers[104] = wmers[105];
        wmers[105] = wmers[106];
        wmers[106] = wmers[107];
        wmers[107] = wmers[108];
        wmers[108] = wmers[109];
        wmers[109] = wmers[110];
        wmers[110] = wmers[111];
        wmers[111] = wmers[112];
        wmers[112] = wmers[113];
        wmers[113] = wmers[114];
        wmers[114] = c;

    printf(">%d\n%s\n\n",j,wmers);
    j++;

    fputs(wmers,output);
    }

return (EXIT_SUCCESS);
}

这是exon11.txt的内容。

CTGCTTGTGAATTTTCTGAGACGGATGTAACAAATACTGAACATCATCAACCCAGTAATAATGATTTGAACACCACTGAGAAGCGTGCAGCTGAGAGGCATCCAGAAAAGTATCAGGGTAGTTCTGTTTCAAACTTGCATGTGGAGCCATGTGGCACAAATACTCATGCCAGCTCATTACAGCATGAGAACAGCAGTTTATTACTCACTAAAGACAGAATGAATGTAGAAAAGGCTGAATTCTGTAATAAAAGCAAACAGCCTGGCTTAGCAAGGAGCCAACATAACAGATGGGCTGGAAGTAAGGAAACATGTAATGATAGGCGGACTCCCAGCACAGAAAAAAAGGTAGATCTGAATGCTGATCCCCTGTGTGAGAGAAAAGAATGGAATAAGCAGAAACTGCCATGCTCAGAGAATCCTAGAGATACTGAAGATGTTCCTTGGATAACACTAAATAGCAGCATTCAGAAAGTTAATGAGTGGTTTTCCAGAAGTGATGAACTGTTAGGTTCTGATGACTCACATGATGGGGAGTCTGAATCAAATGCCAAAGTAGCTGATGTATTGGACGTTCTAAATGAGGTAGATGAATATTCTGGTTCTTCAGAGAAAATAGACTTACTGGCCAGTGATCCTCATGAGGCTTTAATATGTAAAAGTGAAAGAGTTCACTCCAAATCAGTAGAGAGTAATATTGAAGACAAAATATTTGGGAAAACCTATCGGAAGAAGGCAAGCCTCCCCAACTTAAGCCATGTAACTGAAAATCTAATTATAGGAGCATTTGTTACTGAGCCACAGATAATACAAGAGCGTCCCCTCACAAATAAATTAAAGCGTAAAAGGAGACCTACATCAGGCCTTCATCCTGAGGATTTTATCAAGAAAGCAGATTTGGCAGTTCAAAAGACTCCTGAAATGATAAATCAGGGAACTAACCAAACGGAGCAGAATGGTCAAGTGATGAATATTACTAATAGTGGTCATGAGAATAAAACAAAAGGTGATTCTATTCAGAATGAGAAAAATCCTAACCCAATAGAATCACTCGAAAAAGAATCTGCTTTCAAAACGAAAGCTGAACCTATAAGCAGCAGTATAAGCAATATGGAACTCGAATTAAATATCCACAATTCAAAAGCACCTAAAAAGAATAGGCTGAGGAGGAAGTCTTCTACCAGGCATATTCATGCGCTTGAACTAGTAGTCAGTAGAAATCTAAGCCCACCTAATTGTACTGAATTGCAAATTGATAGTTGTTCTAGCAGTGAAGAGATAAAGAAAAAAAAGTACAACCAAATGCCAGTCAGGCACAGCAGAAACCTACAACTCATGGAAGGTAAAGAACCTGCAACTGGAGCCAAGAAGAGTAACAAGCCAAATGAACAGACAAGTAAAAGACATGACAGCGATACTTTCCCAGAGCTGAAGTTAACAAATGCACCTGGTTCTTTTACTAAGTGTTCAAATACCAGTGAACTTAAAGAATTTGTCAATCCTAGCCTTCCAAGAGAAGAAAAAGAAGAGAAACTAGAAACAGTTAAAGTGTCTAATAATGCTGAAGACCCCAAAGATCTCATGTTAAGTGGAGAAAGGGTTTTGCAAACTGAAAGATCTGTAGAGAGTAGCAGTATTTCATTGGTACCTGGTACTGATTATGGCACTCAGGAAAGTATCTCGTTACTGGAAGTTAGCACTCTAGGGAAGGCAAAAACAGAACCAAATAAATGTGTGAGTCAGTGTGCAGCATTTGAAAACCCCAAGGGACTAATTCATGGTTGTTCCAAAGATAATAGAAATGACACAGAAGGCTTTAAGTATCCATTGGGACATGAAGTTAACCACAGTCGGGAAACAAGCATAGAAATGGAAGAAAGTGAACTTGATGCTCAGTATTTGCAGAATACATTCAAGGTTTCAAAGCGCCAGTCATTTGCTCCGTTTTCAAATCCAGGAAATGCAGAAGAGGAATGTGCAACATTCTCTGCCCACTCTGGGTCCTTAAAGAAACAAAGTCCAAAAGTCACTTTTGAATGTGAACAAAAGGAAGAAAATCAAGGAAAGAATGAGTCTAATATCAAGCCTGTACAGACAGTTAATATCACTGCAGGCTTTCCTGTGGTTGGTCAGAAAGATAAGCCAGTTGATAATGCCAAATGTAGTATCAAAGGAGGCTCTAGGTTTTGTCTATCATCTCAGTTCAGAGGCAACGAAACTGGACTCATTACTCCAAATAAACATGGACTTTTACAAAACCCATATCGTATACCACCACTTTTTCCCATCAAGTCATTTGTTAAAACTAAATGTAAGAAAAATCTGCTAGAGGAAAACTTTGAGGAACATTCAATGTCACCTGAAAGAGAAATGGGAAATGAGAACATTCCAAGTACAGTGAGCACAATTAGCCGTAATAACATTAGAGAAAATGTTTTTAAAGAAGCCAGCTCAAGCAATATTAATGAAGTAGGTTCCAGTACTAATGAAGTGGGCTCCAGTATTAATGAAATAGGTTCCAGTGATGAAAACATTCAAGCAGAACTAGGTAGAAACAGAGGGCCAAAATTGAATGCTATGCTTAGATTAGGGGTTTTGCAACCTGAGGTCTATAAACAAAGTCTTCCTGGAAGTAATTGTAAGCATCCTGAAATAAAAAAGCAAGAATATGAAGAAGTAGTTCAGACTGTTAATACAGATTTCTCTCCATATCTGATTTCAGATAACTTAGAACAGCCTATGGGAAGTAGTCATGCATCTCAGGTTTGTTCTGAGACACCTGATGACCTGTTAGATGATGGTGAAATAAAGGAAGATACTAGTTTTGCTGAAAATGACATTAAGGAAAGTTCTGCTGTTTTTAGCAAAAGCGTCCAGAAAGGAGAGCTTAGCAGGAGTCCTAGCCCTTTCACCCATACACATTTGGCTCAGGGTTACCGAAGAGGGGCCAAGAAATTAGAGTCCTCAGAAGAGAACTTATCTAGTGAGGATGAAGAGCTTCCCTGCTTCCAACACTTGTTATTTGGTAAAGTAAACAATATACCTTCTCAGTCTACTAGGCATAGCACCGTTGCTACCGAGTGTCTGTCTAAGAACACAGAGGAGAATTTATTATCATTGAAGAATAGCTTAAATGACTGCAGTAACCAGGTAATATTGGCAAAGGCATCTCAGGAACATCACCTTAGTGAGGAAACAAAATGTTCTGCTAGCTTGTTTTCTTCACAGTGCAGTGAATTGGAAGACTTGACTGCAAATACAAACACCCAGGATCCTTTCTTGATTGGTTCTTCCAAACAAATGAGGCATCAGTCTGAAAGCCAGGGAGTTGGTCTGAGTGACAAGGAATTGGTTTCAGATGATGAAGAAAGAGGAACGGGCTTGGAAGAAAATAATCAAGAAGAGCAAAGCATGGATTCAAACTTAG