我的脚本采用输入文件，文件如下所示。
chr11 3037016 chr11_3037016 8 39 6 44 4 24 7 22 6 31 7 44 8 39 13 41 10 37 9 23 18 32 8 37 2 9 16 33 9 29 4 7 5 30 11 18 chr11 nonsense_mediated_decay exon 3036949 3037109 . - . gene_id "ENSMUSG00000023764"; transcript_id "ENSMUST00000126746"; exon_number "11"; gene_name "Sfi1"; gene_biotype "protein_coding"; transcript_name "Sfi1-015"; chr11 3037016 chr11_3037016 8 39 6 44 4 24 7 22 6 31 7 44 8 39 13 41 10 37 9 23 18 32 8 37 2 9 16 33 9 29 4 7 5 30 11 18 chr11 nonsense_mediated_decay exon 3036949 3037109 . - . gene_id "ENSMUSG00000023764"; transcript_id "ENSMUST00000132893"; exon_number "17"; gene_name "Sfi1"; gene_biotype "protein_coding"; transcript_name "Sfi1-003"; chr11 3037016 chr11_3037016 8 39 6 44 4 24 7 22 6 31 7 44 8 39 13 41 10 37 9 23 18 32 8 37 2 9 16 33 9 29 4 7 5 30 11 18 chr11 protein_coding exon 3036949 3037109 . - . gene_id "ENSMUSG00000023764"; transcript_id "ENSMUST00000066391"; exon_number "22"; gene_name "Sfi1"; gene_biotype "protein_coding"; transcript_name "Sfi1-001"; chr11 3037016 chr11_3037016 8 39 6 44 4 24 7 22 6 31 7 44 8 39 13 41 10 37 9 23 18 32 8 37 2 9 16 33 9 29 4 7 5 30 11 18 chr11 protein_coding exon 3036949 3037109 . - . gene_id "ENSMUSG00000023764"; transcript_id "ENSMUST00000081318"; exon_number "23"; gene_name "Sfi1"; gene_biotype "protein_coding"; transcript_name "Sfi1-017"; chr11 3037016 chr11_3037016 8 39 6 44 4 24 7 22 6 31 7 44 8 39 13 41 10 37 9 23 18 32 8 37 2 9 16 33 9 29 4 7 5 30 11 18 chr11 protein_coding exon 3036949 3037109 . - . gene_id "ENSMUSG00000023764"; transcript_id "ENSMUST00000093407"; exon_number "16"; gene_name "Sfi1"; gene_biotype "protein_coding"; transcript_name "Sfi1-202"; chr11 3037016 chr11_3037016 8 39 6 44 4 24 7 22 6 31 7 44 8 39 13 41 10 37 9 23 18 32 8 37 2 9 16 33 9 29 4 7 5 30 11 18 chr11 protein_coding exon 3036949 3037109 . - . gene_id "ENSMUSG00000023764"; transcript_id "ENSMUST00000101649"; exon_number "22"; gene_name "Sfi1"; gene_biotype "protein_coding"; transcript_name "Sfi1-203"; chr11 3037016 chr11_3037016 8 39 6 44 4 24 7 22 6 31 7 44 8 39 13 41 10 37 9 23 18 32 8 37 2 9 16 33 9 29 4 7 5 30 11 18 chr11 protein_coding exon 3036949 3037109 . - . gene_id "ENSMUSG00000023764"; transcript_id "ENSMUST00000101655"; exon_number "22"; gene_name "Sfi1"; gene_biotype "protein_coding"; transcript_name "Sfi1-020"; chr11 3037016 chr11_3037016 8 39 6 44 4 24 7 22 6 31 7 44 8 39 13 41 10 37 9 23 18 32 8 37 2 9 16 33 9 29 4 7 5 30 11 18 chr11 protein_coding exon 3036949 3037109 . - . gene_id "ENSMUSG00000023764"; transcript_id "ENSMUST00000140846"; exon_number "20"; gene_name "Sfi1"; gene_biotype "protein_coding"; transcript_name "Sfi1-016";
这是我的剧本：
#include <stdio.h>
#include <string.h>
int main(void)
{
static const char filename[] = "input_file.txt";
FILE *file3 = fopen("thirdstep2a.txt","w");
FILE *file = fopen(filename, "r");
if ( file != NULL )
{
char line[BUFSIZ],line2[BUFSIZ] ;
char one[20], three[22], four[20], a1[20],a2[20],a3[20],a4[20],a5[20],a6[20],a7[20],a8[20], a9[20], a10[20],a11[20],a12[20],a13[20],a14[20],a15[20],a16[20],a17[20],a18[20],a19[20],a20[20],a21[20],a22[20],a23[20],a24[20],a25[20],a26[20],a27[20],a28[20],a29[20],a30[20],a31[20],a32[20],a33[20],a34[20];
char one2[20],three2[20],four2[26], six2[26], seven2[20], eight2[11], nine2[20];
fgets(line, sizeof line, file);
fgets(line2, sizeof line2, file);
while(1)
{
sscanf(line, "%19s %21s %19s %19s %19s %19s %19s %19s %19s %19s %19s %19s %19s %19s %19s %19s %19s %19s %19s %19s %19s %19s %19s %19s %19s %19s %19s %19s %19s %19s %19s %19s %19s %19s %19s %19s %19s", one, three, four, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20, a21, a22, a23, a24, a25, a26, a27, a28, a29, a30, a31, a32, a33, a34);
sscanf(line2, "%*s %*s %10s %19s %19s %*s %*s %*s %*s %25s %*s %25s %*s %19s %*s %19s", eight2, one2, three2, four2, six2, seven2, nine2);
fprintf(file3,"%s\t %s\t %s\t %s\t %s\t %s\t %s\t %s\t %s\t %s\t %s\t %s\t %s\t %s\t %s\t %s\t %s\t %s\t %s\t %s\t %s\t %s\t %s\t %s\t %s\t %s\t %s\t %s\t %s \t %s\t %s\t %s\t %s\t %s\t %s\t", one, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20, a21, a22, a23, a24, a25, a26, a27, a28, a29, a30, a31, a32, a33, a34);
fprintf(file3,"%s\t %s\t %s\t %s\t %s\t\n", four2, six2, seven2, one2, three2);
if(fgets(line, sizeof line, file) == NULL)
break;
if(fgets(line2, sizeof line, file) == NULL)
break;
}
}
else
{
perror(filename);
}
return 0;
}
我的输出如下：
chr11 8 39 6 44 "Sfi1"; 24 7 22 6 31 7 44 8 39 13 41 10 37 9 23 18 32 8 37 2 9 16 33 9 29 4 7 5 30 "ENSMUSG00000023764"; "ENSMUST00000126746"; "11"; 3036949 3037109 chr11 8 39 6 44 "Sfi1"; 24 7 22 6 31 7 44 8 39 13 41 10 37 9 23 18 32 8 37 2 9 16 33 9 29 4 7 5 30 "ENSMUSG00000023764"; "ENSMUST00000132893"; "17"; 3036949 3037109 chr11 8 39 6 44 "Sfi1"; 24 7 22 6 31 7 44 8 39 13 41 10 37 9 23 18 32 8 37 2 9 16 33 9 29 4 7 5 30 "ENSMUSG00000023764"; "ENSMUST00000066391"; "22"; 3036949 3037109 chr11 8 39 6 44 "Sfi1"; 24 7 22 6 31 7 44 8 39 13 41 10 37 9 23 18 32 8 37 2 9 16 33 9 29 4 7 5 30 "ENSMUSG00000023764"; "ENSMUST00000081318"; "23"; 3036949 3037109 chr11 8 39 6 44 "Sfi1"; 24 7 22 6 31 7 44 8 39 13 41 10 37 9 23 18 32 8 37 2 9 16 33 9 29 4 7 5 30 "ENSMUSG00000023764"; "ENSMUST00000093407"; "16"; 3036949 3037109 chr11 8 39 6 44 "Sfi1"; 24 7 22 6 31 7 44 8 39 13 41 10 37 9 23 18 32 8 37 2 9 16 33 9 29 4 7 5 30 "ENSMUSG00000023764"; "ENSMUST00000101649"; "22"; 3036949 3037109 chr11 8 39 6 44 "Sfi1"; 24 7 22 6 31 7 44 8 39 13 41 10 37 9 23 18 32 8 37 2 9 16 33 9 29 4 7 5 30 "ENSMUSG00000023764"; "ENSMUST00000101655"; "22"; 3036949 3037109 chr11 8 39 6 44 "Sfi1"; 24 7 22 6 31 7 44 8 39 13 41 10 37 9 23 18 32 8 37 2 9 16 33 9 29 4 7 5 30 "ENSMUSG00000023764"; "ENSMUST00000140846"; "20"; 3036949 3037109 chr11 8 39 6 44 "Sfi1"; 24 7 22 6 31 7 44 8 39 13 41 10 37 9 23 18 32 8 37 2 9 16 33 9 29 4 7 5 30 "ENSMUSG00000023764"; "ENSMUST00000153425"; "21"; 3036949 3037109 chr11 8 39 6 44 "Sfi1"; 24 7 22 6 31 7 44 8 39 13 41 10 37 9 23 18 32 8 37 2 9 16 33 9 29 4 7 5 30 "ENSMUSG00000023764"; "ENSMUST00000137633"; "3"; 3036949 3037109 chr11 8 39 6 44 "Sfi1"; 24 7 22 6 31 7 44 8 39 13 41 10 37 9 23 18 32 8 37 2 9 16 33 9 29 4 7 5 30 "ENSMUSG00000023764"; "ENSMUST00000138126";
正如您所看到的，我的输出看起来不正确。我从a5字符串中获取了一些错误数据。我无法弄清楚错误。
答案 0 :(得分：3)
编译代码时（在文件bio.c中），编译器说：
$ gcc -O3 -g -Wall -Wextra -std=c99 bio.c -o bio
bio.c: In function ‘main’:
bio.c:24: warning: too few arguments for format
bio.c:24: warning: too few arguments for format
bio.c:17: warning: unused variable ‘two2’
bio.c:15: warning: unused variable ‘five’
bio.c:9: warning: unused variable ‘i’
$
我不能打算更准确地解决问题所在（第24行是sscanf()的{{1}}），但警告表明代码有问题。
答案 1 :(得分：1)
读取编译器输出。 GCC给出了这个
../../../vmc/_tests/chom.c:23:10: warning: too few arguments for format
../../../vmc/_tests/chom.c:23:10: warning: too few arguments for format
../../../vmc/_tests/chom.c:16:22: warning: unused variable ‘two2’
../../../vmc/_tests/chom.c:14:32: warning: unused variable ‘five’
../../../vmc/_tests/chom.c:8:8: warning: unused variable ‘i’
你想特别担心前两个。