Answer:
sed '/march/{d;}' birthdays.txt > result
.txt
Explanation:
sed syntax is basically:
<em>sed '/expression/{command;command;...;}' inputfile > outputfile</em>
- First, for the expression part, we use /march/ to match all lines containing that string.
- Then for the command part, we only use {d} command to delete every matching line found.
- The third part contains the input file to process, I have named it birthdays.txt, but it could have been any other file needed.
- Finally "> result
.txt" makes the script output to be saved into a file named result.txt
Answer:
Implicit type casting means the type casting done by the compiler during compilation of program whereas Explicit type casting means the programmer explicitly type casts the variables. This is the difference implicit and explicit type casting.
Explanation:
Type casting means the conversion of one data type into another data type. There are two types of type casting. They are Implicit type casting and Explicit type casting.
<u>Implicit type casting:</u> The type casting which is done by the compiler during the compilation of a program. This occurs when we assigning smaller data type to larger data type and also both the data type are compatible. Below example clears the above concepts.
Ex:

In the above example " i " is " int " data type whereas " l " is long data type but as we assigned the value of " i " to " l ". Here " int " and " long " are compatible data types and we assigned smaller data type ( int - i ) to larger data type ( long - l ) implicit type casting occurs.
<u>Explicit type casting:</u> The type casting which is done by the programmer explicitly to convert one data type into other data type. If we want to assign a value of larger data type to smaller data type explicit type casting is required. Below example clears the above concepts.
Ex: 

In the above example " d " is " double " data type whereas " l " is " long " data type. Here we are explicitly type casting to change larger data value ( double - d ) to smaller data value ( long - l ).
It is important for a person to upgrade their job skills because upgrading their skills will Increase their self-confidence, Helps to learn new techniques at work, Keep Your Knowledge Up-to-Date, increase your ability in order to do your job well, and so on.
<u>Explanation:</u>
The most significant purposes behind abilities improvement in an association is for the development significant by and by and in an association. Workers need to remain learning so as to develop. At the point when you are going after another position, it's extremely significant that you can exhibit that you stay up with the latest. With certain callings, it's obligatory.
And, the more the abilities hole is developing, the more significant these three viewpoints become. This is on the grounds that we have to unmistakably comprehend whether it is information, expertise or capacity that should be created.
Answer: D. He did not create a back up of his data.
Explanation: He lost his data, so he did not back it up in case he lost his laptop.
Explanation:
A map is the correct answer hope that helps you.