diff --git a/README.md b/README.md
index e613393..8ba717c 100644
--- a/README.md
+++ b/README.md
@@ -9,5 +9,7 @@
     git clone https://github.com/niuyuling/libini
     cd libini
     make
+
+# test
     gcc -Wall test.c -o test -L./ -lini -static
     ./test
\ No newline at end of file
diff --git a/config.ini b/config.ini
index 20f43f8..8850372 100644
--- a/config.ini
+++ b/config.ini
@@ -4,4 +4,8 @@ name=aixiao.me
 
 a=10
 b=1234567890
-c=1.1234567
+c=1.223445446
+
+
+[TAC]
+e=!@#$%^&*()_+
diff --git a/libini.c b/libini.c
index 42560bb..80b0a26 100644
--- a/libini.c
+++ b/libini.c
@@ -3,19 +3,21 @@
 #include <stdlib.h>
 #include "libini.h"
 
+#define BUFFER_SIZE 1024
+
 int getinikeystring(char *title, char *key, char *filename, char *buf)
 {
     FILE *fp;
     int flag = 0;
-    char sTitle[64], *wTmp;
-    char sLine[1024];
+    char sTitle[BUFFER_SIZE], *wTmp;
+    char sLine[BUFFER_SIZE];
     sprintf(sTitle, "[%s]", title);
 
     if (NULL == (fp = fopen(filename, "r"))) {
         perror("fopen");
         return -1;
     }
-    while (NULL != fgets(sLine, 1024, fp)) {
+    while (NULL != fgets(sLine, BUFFER_SIZE, fp)) {
         if (0 == strncmp("//", sLine, 2))
             continue;
         if ('#' == sLine[0])
@@ -49,20 +51,22 @@ int putinikeystring(char *title, char *key, char *val, char *filename)
     FILE *fpr;
     FILE *fpw;
     int flag = 0;
-    char sLine[1024], sTitle[32], *wTmp;
+    char sLine[BUFFER_SIZE], sTitle[BUFFER_SIZE], *wTmp;
+    char sLine_backup[BUFFER_SIZE];
     sprintf(sTitle, "[%s]", title);
     if (NULL == (fpr = fopen(filename, "r")))
         return -1;
     sprintf(sLine, "%s.tmp", filename);
     if (NULL == (fpw = fopen(sLine, "w")))
         return -1;
-    while (NULL != fgets(sLine, 1024, fpr)) {
+    while (NULL != fgets(sLine, BUFFER_SIZE, fpr)) {
         if (2 != flag) {
             wTmp = strchr(sLine, '=');
             if ((NULL != wTmp) && (1 == flag)) {
-                if (0 == strncmp(key, sLine, strlen(key))) {
+                strcpy(sLine_backup, sLine);
+                if (0 == strncmp(key, sLine, strlen(key)) && !(strncasecmp(strtok(sLine_backup, "="), key, strlen(strtok(sLine_backup, "="))))) {
                     flag = 2;
-                    sprintf(wTmp + 1, " %s\n", val);
+                    sprintf(wTmp+1, "%s\n", val);
                 }
             } else {
                 if (0 == strncmp(sTitle, sLine, strlen(sTitle))) {
@@ -80,21 +84,21 @@ int putinikeystring(char *title, char *key, char *val, char *filename)
 
 int getinikeyint(char *title, char *key, char *filename)
 {
-    char buf[256];
+    char buf[BUFFER_SIZE];
     getinikeystring(title, key, filename, buf);
     return atoi(buf);
 }
 
 long int getinikeylong(char *title, char *key, char *filename)
 {
-    char buf[256];
+    char buf[BUFFER_SIZE];
     getinikeystring(title, key, filename, buf);
     return atol(buf);
 }
 
 float getinikeyfloat(char *title, char *key, char *filename)
 {
-    char buf[256];
+    char buf[BUFFER_SIZE];
     getinikeystring(title, key, filename, buf);
     return atof(buf);
 }
diff --git a/test.c b/test.c
index 582bceb..6c0f039 100644
--- a/test.c
+++ b/test.c
@@ -4,14 +4,20 @@
 int main(void) {
 
     char buf[50];
-    getinikeystring("CAT", "age", "config.ini", buf);
+    getinikeystring("CAT", "age", "config.ini", buf);           // 字符串
+    printf("%s\n", buf);
+    getinikeystring("CAT", "name", "config.ini", buf);          // 字符串
     printf("%s\n", buf);
 
-    getinikeystring("CAT", "name", "config.ini", buf);
-    printf("%s\n", buf);
 
-    printf("%d\n", getinikeyint("CAT", "a", "config.ini"));
-    printf("%ld\n", getinikeylong("CAT", "b", "config.ini"));
-    printf("%f\n", getinikeyfloat("CAT", "c", "config.ini"));
+    printf("%d\n", getinikeyint("CAT", "a", "config.ini"));     // 整型
+    printf("%ld\n", getinikeylong("CAT", "b", "config.ini"));   // 长整型
+    printf("%f\n", getinikeyfloat("CAT", "c", "config.ini"));   // 浮点型（默认小数点后6位）
+
+
+    putinikeystring("TAC", "e", "!@#$%^&*()_+", "config.ini");  // 写入
+    getinikeystring("TAC", "e", "config.ini", buf);
+    printf("%s\n", buf);
+    
     return 1;
 }
\ No newline at end of file