#include <stdio.h>#include <string.h>char USER[512];char SERVER[512];char PASSWORD[512];char DATABASE[512];int read_login_info(){FILE *in;char line[512];char *s1, *s2;	in = fopen("../../../PWD","r");	if (!in) {		fprintf(stderr,"Can not open PWD file\n\n");		return 1;	}	while (fgets(line, 512, in)) {		s1=strtok(line,"=");		s2=strtok(NULL,"\n");		if (!s1 || !s2) continue;		if (!strcmp(s1,"UID")) {			strcpy(USER,s2);		} else if (!strcmp(s1,"SRV")) {			strcpy(SERVER,s2);		} else if (!strcmp(s1,"PWD")) {			strcpy(PASSWORD,s2);		} else if (!strcmp(s1,"DB")) {			strcpy(DATABASE,s2);		}	}	return 0;}