diff --git a/README1.md b/README1.md
index cc30acc..2bddb79 100644
--- a/README1.md
+++ b/README1.md
@@ -433,9 +433,9 @@ Step 1:输入文件名
 Step 2：查看输入的文件名是否和已有的文化相匹配
 Step 3：若匹配成功，则打开文件
 Step 4：若不成功，则返回错误值
-Step 5：打开后利用循环，依次输出文件里各个学生的学号，姓名和成绩；
+Step 5：打开后利用循环，依次输出文件里各个图书信息；
 Step 6：关闭文件
-![读取流程图](images/read_data.drawio.svg)
+![读取流程图](read_data.svg)
 
 
 #### make_chart
@@ -444,4 +444,4 @@ Step 2：循环打印图书名和图书编号
 Step 3：循环套循环打印图表
 Step 4：打印结束后换行继续循环
 Step 5：打印成功
-![读取流程图](make_chart.drawio.svg)
+![读取流程图](make_chart.svg)
diff --git a/make_chart.svg b/make_chart.svg
new file mode 100644
index 0000000..7429698
--- /dev/null
+++ b/make_chart.svg
@@ -0,0 +1 @@
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height: 1px; padding-top: 296px; margin-left: 45px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: nowrap;">Y</div></div></div></foreignObject><text x="45" y="300" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Y</text></switch></g><ellipse cx="60" cy="471" rx="60" ry="25" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 471px; margin-left: 1px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><span style="color: rgb(51, 51, 51); font-family: &quot;Microsoft YaHei&quot;, Helvetica, &quot;Meiryo UI&quot;, &quot;Malgun Gothic&quot;, &quot;Segoe UI&quot;, &quot;Trebuchet MS&quot;, Monaco, monospace, Tahoma, STXihei, 华文细黑, STHeiti, &quot;Helvetica Neue&quot;, &quot;Droid Sans&quot;, &quot;wenquanyi micro hei&quot;, FreeSans, Arimo, Arial, SimSun, 宋体, Heiti, 黑体, sans-serif; font-size: 16px; text-align: justify; background-color: rgb(255, 255, 255);">打印成功</span></div></div></div></foreignObject><text x="60" y="475" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">打印成功</text></switch></g><path d="M 60 396 L 60 439.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 60 444.88 L 56.5 437.88 L 60 439.63 L 63.5 437.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><rect x="0" y="336" width="120" height="60" rx="9" ry="9" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; 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\ No newline at end of file
diff --git a/read_data.svg b/read_data.svg
new file mode 100644
index 0000000..7757f3e
--- /dev/null
+++ b/read_data.svg
@@ -0,0 +1,2 @@
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text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 108px; height: 1px; padding-top: 30px; margin-left: 146px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">输入图书id</div></div></div></foreignObject><text x="200" y="34" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">输入图书id</text></switch></g><path d="M 520 180 L 520 440 Q 520 450 510 450 L 266.37 450" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 261.12 450 L 268.12 446.5 L 266.37 450 L 268.12 453.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><rect x="460" y="120" width="120" height="60" rx="9" ry="9" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 150px; margin-left: 461px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><span style="color: rgb(51, 51, 51); font-family: &quot;Microsoft YaHei&quot;, Helvetica, &quot;Meiryo UI&quot;, &quot;Malgun Gothic&quot;, &quot;Segoe UI&quot;, &quot;Trebuchet MS&quot;, Monaco, monospace, Tahoma, STXihei, 华文细黑, STHeiti, &quot;Helvetica Neue&quot;, &quot;Droid Sans&quot;, &quot;wenquanyi micro hei&quot;, FreeSans, Arimo, Arial, SimSun, 宋体, Heiti, 黑体, sans-serif; font-size: 16px; text-align: justify; background-color: rgb(255, 255, 255);">返回错误值</span></div></div></div></foreignObject><text x="520" y="154" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">返回错误值</text></switch></g><path d="M 200 330 L 200 403.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 200 408.88 L 196.5 401.88 L 200 403.63 L 203.5 401.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><rect x="140" y="270" width="120" height="60" rx="9" ry="9" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 300px; margin-left: 141px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><span style="color: rgb(51, 51, 51); font-family: &quot;Microsoft YaHei&quot;, Helvetica, &quot;Meiryo UI&quot;, &quot;Malgun Gothic&quot;, &quot;Segoe UI&quot;, &quot;Trebuchet MS&quot;, Monaco, monospace, Tahoma, STXihei, 华文细黑, STHeiti, &quot;Helvetica Neue&quot;, &quot;Droid Sans&quot;, &quot;wenquanyi micro hei&quot;, FreeSans, Arimo, Arial, SimSun, 宋体, Heiti, 黑体, sans-serif; font-size: 16px; text-align: justify; background-color: rgb(255, 255, 255);">输出图书信息<br /></span></div></div></div></foreignObject><text x="200" y="304" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">输出图书信息
+</text></switch></g><path d="M 200 90 L 200 86.37" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 200 81.12 L 203.5 88.12 L 200 86.37 L 196.5 88.12 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><path d="M 200 210 L 200 263.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 200 268.88 L 196.5 261.88 L 200 263.63 L 203.5 261.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><path d="M 400 150 L 453.63 150" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 458.88 150 L 451.88 153.5 L 453.63 150 L 451.88 146.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><path d="M 200 90 L 400 150 L 200 210 L 0 150 Z" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 398px; height: 1px; padding-top: 150px; margin-left: 1px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><span style="color: rgb(51, 51, 51); font-family: &quot;Microsoft YaHei&quot;, Helvetica, &quot;Meiryo UI&quot;, &quot;Malgun Gothic&quot;, &quot;Segoe UI&quot;, &quot;Trebuchet MS&quot;, Monaco, monospace, Tahoma, STXihei, 华文细黑, STHeiti, &quot;Helvetica Neue&quot;, &quot;Droid Sans&quot;, &quot;wenquanyi micro hei&quot;, FreeSans, Arimo, Arial, SimSun, 宋体, Heiti, 黑体, sans-serif; font-size: 16px; text-align: justify; background-color: rgb(255, 255, 255);">查看输入的图书ID是否和已有的图书相匹配</span></div></div></div></foreignObject><text x="200" y="154" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">查看输入的图书ID是否和已有的图书相匹配</text></switch></g><ellipse cx="200" cy="450" rx="60" ry="40" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 450px; margin-left: 141px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">结束</div></div></div></foreignObject><text x="200" y="454" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">结束</text></switch></g><rect x="405" y="125" width="30" height="30" fill="none" stroke="none" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 1px; height: 1px; padding-top: 140px; margin-left: 420px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: nowrap;">N</div></div></div></foreignObject><text x="420" y="144" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">N</text></switch></g><rect x="170" y="230" width="30" height="30" fill="none" stroke="none" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 1px; height: 1px; padding-top: 245px; margin-left: 185px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: nowrap;">Y</div></div></div></foreignObject><text x="185" y="249" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Y</text></switch></g></g><switch><g requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"/><a transform="translate(0,-5)" xlink:href="https://www.diagrams.net/doc/faq/svg-export-text-problems" target="_blank"><text text-anchor="middle" font-size="10px" x="50%" y="100%">Text is not SVG - cannot display</text></a></switch></svg>
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