如下圖data.txt，需要把數(shù)據(jù)按17行讀取到自動命名新建的txt文檔里：

1-17行? ? ?1.txt

18-34行? ?2.txt

……

#include <stdio.h> #include <stdlib.h> #include <string.h> #define FILE_BUF_LEN 1024 #define MODEM_FILE_PATH "./data.txt" int main() {int i=0;FILE *fp,*fpw[512];char fbuf[FILE_BUF_LEN];char wfname[50]={""};fp = fopen(MODEM_FILE_PATH,"r");if(fp == NULL){ printf("Open %s Error!\n", MODEM_FILE_PATH); exit(1); } while(feof(fp)==0){memset(fbuf,0,FILE_BUF_LEN);fgets(fbuf,FILE_BUF_LEN,fp);printf("[%d] >> %s\n",i,fbuf);printf("===== i=%d =====\n",i % 17);if( i % 17 == 0)//0或17行的倍數(shù)；{sprintf(wfname,"./gff-gu--%d.txt",i/17);//gff-gu--4.0printf("%s\n",wfname);fpw[i/17] = fopen(wfname,"wb+");printf("i=%d\n",i);if(fpw[i/17] == NULL)//第n個17行；{ printf("Open fpw[%d] Error!\n", i/17); exit(1); } }fwrite(fbuf,1,strlen(fbuf),fpw[i/17]);i++;}fclose(fp); return 0; }

以下固定了輸出文件名格式gff-gu-*，從-4.0開始0.1遞加：

#include <stdio.h> #include <stdlib.h> #include <string.h> #define FILE_BUF_LEN 1024 #define MODEM_FILE_PATH "./data.txt" int main() {int i=0;float num1=-4.0,num2=0;FILE *fp,*fpw[512];char fbuf[FILE_BUF_LEN];char wfname[50]={""};fp = fopen(MODEM_FILE_PATH,"r");if(fp == NULL){ printf("Open %s Error!\n", MODEM_FILE_PATH); exit(1); } while(feof(fp)==0){memset(fbuf,0,FILE_BUF_LEN);fgets(fbuf,FILE_BUF_LEN,fp);printf("[%d] >> %s\n",i,fbuf);printf("===== i=%d =====\n",i % 17);if( i % 17 == 0)//0或17行的倍數(shù)；{num2=(i/17)/10;sprintf(wfname,"./gff-gu--%d.txt",num1+num2);//gff-gu--4.0printf("%s\n",wfname);fpw[i/17] = fopen(wfname,"wb+");printf("i=%d\n",i);if(fpw[i/17] == NULL)//第n個17行；{ printf("Open fpw[%d] Error!\n", i/17); exit(1); } }fwrite(fbuf,1,strlen(fbuf),fpw[i/17]);i++;}fclose(fp); return 0; }

以下為范例數(shù)據(jù) data.txt

-12 15.67972 -11 14.41002 -10 13.14073 -9 11.87113 -8 10.60172 -7 9.33216 -6 8.06275 -5 6.79329 -4 5.52414 -3 4.25744 -2 3.00386 -1 1.8144 0 0.85292 1 0.31004 2 0.10066 3 0.03197 4 0.01012 -11.9 15.55264 -10.9 14.283 -9.9 13.01364 -8.9 11.74412 -7.9 10.47464 -6.9 9.20512 -5.9 7.93569 -4.9 6.66624 -3.9 5.3972 -2.9 4.1312 -1.9 2.88092 -0.9 1.70527 0.1 0.78 1.1 0.27869 2.1 0.09014 3.1 0.02862 4.1 0.00905 -11.8 15.42555 -10.8 14.15594 -9.8 12.88655 -8.8 11.61707 -7.8 10.34754 -6.8 9.07805 -5.8 7.80861 -4.8 6.53918 -3.8 5.27026 -2.8 4.00512 -1.8 2.75879 -0.8 1.59888 0.2 0.71181 1.2 0.25045 2.2 0.08076 3.2 0.02563 4.2 0.00811 -11.7 15.29842 -10.7 14.02886 -9.7 12.75942 -8.7 11.49 -7.7 10.22041

?

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