C++实现逐行读取TXT文件的内容，并将指定的内容输出来

[{"title":"（ 29 个子文件 2.29MB ） C++实现逐行读取TXT文件的内容，并将指定的内容输出来","children":[{"title":"ReadTest","children":[{"title":"ReadTest","children":[{"title":"Read.cpp <span style='color:#111;'> 1.37KB </span>","children":null,"spread":false},{"title":"ReadTest.vcxproj.user <span style='color:#111;'> 165B </span>","children":null,"spread":false},{"title":"ReadTest.vcxproj <span style='color:#111;'> 4.01KB </span>","children":null,"spread":false},{"title":"ReadTest.vcxproj.filters <span style='color:#111;'> 945B </span>","children":null,"spread":false},{"title":"Debug","children":[{"title":"vc120.pdb <span style='color:#111;'> 364.00KB </span>","children":null,"spread":false},{"title":"Read.obj <span style='color:#111;'> 325.85KB </span>","children":null,"spread":false},{"title":"ReadTest.tlog","children":[{"title":"CL.write.1.tlog <span style='color:#111;'> 332B </span>","children":null,"spread":false},{"title":"CL.read.1.tlog <span style='color:#111;'> 12.43KB </span>","children":null,"spread":false},{"title":"cl.command.1.tlog <span style='color:#111;'> 602B </span>","children":null,"spread":false},{"title":"link.write.1.tlog <span style='color:#111;'> 310B </span>","children":null,"spread":false},{"title":"ReadTest.lastbuildstate <span style='color:#111;'> 154B </span>","children":null,"spread":false},{"title":"link.command.1.tlog <span style='color:#111;'> 1002B </span>","children":null,"spread":false},{"title":"link.read.1.tlog <span style='color:#111;'> 2.43KB </span>","children":null,"spread":false}],"spread":true},{"title":"vc120.idb <span style='color:#111;'> 267.00KB </span>","children":null,"spread":false},{"title":"ReadTest.log <span style='color:#111;'> 1.31KB </span>","children":null,"spread":false}],"spread":true}],"spread":true},{"title":"ReadTest.sdf <span style='color:#111;'> 7.63MB </span>","children":null,"spread":false},{"title":"ReadTest.v12.suo <span style='color:#111;'> 19.00KB </span>","children":null,"spread":false},{"title":"c154_x64","children":[{"title":"include","children":[{"title":"C154Plus.h <span style='color:#111;'> 2.19KB </span>","children":null,"spread":false}],"spread":true},{"title":"lib","children":[{"title":"C154Plus.lib <span style='color:#111;'> 3.51KB </span>","children":null,"spread":false},{"title":"C154Plus.ilk <span style='color:#111;'> 622.11KB </span>","children":null,"spread":false},{"title":"C154Plus.pdb <span style='color:#111;'> 1.29MB </span>","children":null,"spread":false},{"title":"C154Plus.dll <span style='color:#111;'> 114.00KB </span>","children":null,"spread":false},{"title":"C154.txt <span style='color:#111;'> 57B </span>","children":null,"spread":false},{"title":"C154Plus.exp <span style='color:#111;'> 1.72KB </span>","children":null,"spread":false}],"spread":true}],"spread":true},{"title":"ReadTest.sln <span style='color:#111;'> 970B </span>","children":null,"spread":false},{"title":"Debug","children":[{"title":"ReadTest.pdb <span style='color:#111;'> 1.11MB </span>","children":null,"spread":false},{"title":"ReadTest.ilk <span style='color:#111;'> 789.98KB </span>","children":null,"spread":false},{"title":"C154.txt <span style='color:#111;'> 57B </span>","children":null,"spread":false},{"title":"ReadTest.exe <span style='color:#111;'> 108.00KB </span>","children":null,"spread":false}],"spread":true}],"spread":true}],"spread":true}]