Monthly Archives: February 2015

Nesting of conditional statements

Nesting of conditionales statements such as if´s, else´s or switch´s is a way to solve a problem using programming. As it´s name says is just nesting conditionals Here goes an image where you can see how it has to look like the nest of conditionals. Depending on which conditional you use it will be the way you have to use them. Remember that nesting conditional statements it´s used for making decisions while the programm is running and it´s required the well syntax. 

The conventions of programming are required and remember that every line that will “depend” from another has to be a little bit written to the right as you can see in the example code. Example:

if (The blog == Blog)

    cout << “Correct” << endl;

else 

      if (The blog != Blog)

          cout << “incorrect” << endl; 

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Compilers reserve certain terms or keywords (keywords) for the syntactic language use, such as: asm, auto, break, case, char, do, for, etc. While these words are defined for ANSI C, different compilers extend this definition to other terms.

To create a variable in a particular place of a program first write the variable and then the identifier with which we name the variable, followed all a ‘;’. This is referred to define a variable. The general definition is:

For example:

int number; / * Create the variable number of type integer * /

char letter; / * Create the letter variable, character type * /

float a, b; / * Create two variables a and b, of floating point number * /

Use switch as a conditional

Programming in C++ gives you a big list of conditionals that you may use to take decisions while the programm is running. One of those it´s called “switch”. As the if´s and elses the switch can be used as a conditional. First the switch has a particular way to use it. As you can see in the image the switch need a parameter to compare the given “message” and then take decisions between the bunch of posibilities. After that switch needs { } After all this the posibilities come and the way to write them are with a “case” before de posibility. Having the “case” means that there will be the first posibility. The posibiilty has to be inside ” ” to indicate itself as a posibility after that : are required. After having the posibility you can add whatever you can, a cout << ” ” << endl; or another conditional but you should have a break after whatever you do to close that posibility. At the last posibility is not required with a break cause at this point you will close the whole switch with correspond } . 

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