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#include<stdio.h>
#include<stdlib.h>
int main ( )
{
const char* file_name = "E:/test.txt";
FILE* fp;
if ( ( fp = fopen ( file_name , "r" ) ) == NULL )
{
printf ( "不能打开 %s\n" , file_name );
exit ( EXIT_FAILURE );
}
else
{
printf ( "成功打开 %s\n" , file_name );
}
char str [ 20 ];
while ( fgets ( str , 20 , fp ) != NULL )
{
fputs ( str , stdout );
}
fclose ( fp );
}
#include <stdio.h>
#include <string.h>
#define MAXLEN 1000
char ln[MAXLEN];
FILE *f;
int i,z;
int b,n,L;
int main(int argc,char **argv) {
if (argc<2) {
printf("Usage:%s fullpathfilename.ext\nget total blank/non-blank/total linenumbers.\n",argv[0]);
return 1;
}
f=fopen(argv[1],"r");
if (NULL==f) {
printf("Can not open file [%s]!\n",argv[1]);
return 2;
}
z=0;
b=0;
n=0;
L=0;
while (1) {
if (NULL==fgets(ln,MAXLEN,f)) break;
L=strlen(ln);
if ('\n'==ln[L-1]) {
if (0==z) {
for (i=0;i<L-1;i++) {
if (!(' '==ln[i] || '\t'==ln[i])) break;
}
if (i<L-1) z=1;//当前行不是空行
}
if (0==z) b++; else n++;
z=0;
} else {
if (0==z) {
for (i=0;i<L;i++) {
if (!(' '==ln[i] || '\t'==ln[i])) break;
}
if (i<L) z=1;//当前行不是空行
}
}
}
fclose(f);
if (L>0 && '\n'!=ln[L-1]) {
if (0==z) b++; else n++;//最后一行末尾无'\n'也计算
}
printf("File:[%s] total blank/non-blank/total linenumbers is %d/%d/%d\n",argv[1],b,n,b+n);
return 0;
}