Add filename test

cpp/filename_test/filename_test.cbp

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+<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
+<CodeBlocks_project_file>
+	<FileVersion major="1" minor="6" />
+	<Project>
+		<Option title="filename_test" />
+		<Option pch_mode="2" />
+		<Option compiler="gcc" />
+		<Build>
+			<Target title="Debug">
+				<Option output="bin/Debug/filename_test" prefix_auto="1" extension_auto="1" />
+				<Option object_output="obj/Debug/" />
+				<Option type="1" />
+				<Option compiler="gcc" />
+				<Compiler>
+					<Add option="-g" />
+				</Compiler>
+			</Target>
+			<Target title="Release">
+				<Option output="bin/Release/filename_test" prefix_auto="1" extension_auto="1" />
+				<Option object_output="obj/Release/" />
+				<Option type="1" />
+				<Option compiler="gcc" />
+				<Compiler>
+					<Add option="-O2" />
+				</Compiler>
+				<Linker>
+					<Add option="-s" />
+				</Linker>
+			</Target>
+		</Build>
+		<Compiler>
+			<Add option="-Wall" />
+			<Add option="-fexceptions" />
+		</Compiler>
+		<Unit filename="main.cpp" />
+		<Extensions />
+	</Project>
+</CodeBlocks_project_file>

cpp/filename_test/filename_test.depend

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+# depslib dependency file v1.0
+1609576207 source:/root/filename_test/main.cpp
+	<iostream>
+	<cstdio>
+

cpp/filename_test/main.cpp

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+#include <iostream>
+#include <cstdio>
+#include <cstring>
+
+typedef void(*pfun)();
+
+void dale(){
+    printf("custom filename test by daleclack\n");
+}
+
+void write1(){
+    getchar();
+    char str[57];
+    fgets(str,sizeof(str),stdin);
+    freopen("test","w",stdout);
+    printf("%s",str);
+    fclose(stdout);
+}
+
+void test(){
+    char filename[57];
+    FILE *fp;
+    fp=fopen("test","r");
+        if(fp==NULL){printf("File not exist!");return ;}
+        fgets(filename,57,fp);
+    fclose(fp);
+    int length=strlen(filename);
+    filename[length-1]='\0';
+    fp=fopen(filename,"w");
+    fclose(fp);
+}
+
+pfun a[]={dale,write1,test};
+
+int main(int argc,char *argv[])
+{
+    int x;
+    printf("1.write content 2.test the custom filename\n");
+    scanf("%d",&x);
+    a[x]();
+    return 0;
+}

cpp/filename_test/test

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+5465263