#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main(int argc, char *argv[])
{
char str[50];
if(argc < 2)
{
fprintf(stderr,"Usage:%s<filename>\n",argv[0]);
return -1;
}
FILE *fp = fopen(argv[1],"r");
if(NULL == fp)
{
perror("fopen");
return-1;
}
printf("fopen sucess!\n");
int lines = 0;
while(fgets(str,sizeof(str),fp) != NULL)
{
if(str[strlen(str)-1] == '\n')
lines++;
}
printf("%s lines:%d\n",argv[1],lines);
fclose(fp);
return 0;
}