When is a "switch" statement better than multiple "if" statements?

Asked by Last Modified  

15 Answers

Learn C Language

Follow 1
Answer

Please enter your answer

Vetrivel Samidurai

Tutor

switch statement is generally best to use when you have more than two conditional expressions based on a single variable of numeric type. For instance, rather than the code if (x == 1) printf(“x is equal to one.\n”); else if (x == 2) printf(“x is equal to two.\n”); else if (x ==...
read more
switch statement is generally best to use when you have more than two conditional expressions based on a single variable of numeric type. For instance, rather than the code if (x == 1) printf(“x is equal to one.\n”); else if (x == 2) printf(“x is equal to two.\n”); else if (x == 3) printf(“x is equal to three.\n”); else printf(“x is not equal to one, two, or three.\n”); the following code is easier to read and maintain: switch (x) { case 1: printf(“x is equal to one.\n”); break; case 2: printf(“x is equal to two.\n”); break; case 3: printf(“x is equal to three.\n”); break; default: printf(“x is not equal to one, two, or three.\n”); break; } Notice that for this method to work, the conditional expression must be based on a variable of numeric type in order to use the switch statement. Also, the conditional expression must be based on a single variable. For instance, even though the following if statement contains more than two conditions, it is not a candidate for using a switch statement because it is based on string comparisons and not numeric comparisons: char* name = “Lupto”; if (!stricmp(name, “Isaac”)) printf(“Your name means ‘Laughter’.\n”); else if (!stricmp(name, “Amy”)) printf(“Your name means ‘Beloved’.\n “); else if (!stricmp(name, “Lloyd”)) printf(“Your name means ‘Mysterious’.\n “); else printf(“I haven’t a clue as to what your name means.\n”) read less
Comments
Dislike Bookmark

Professional Trainer

In case of we have to check one variable and compare it's value with list of values of same then and then we can use switch case. for example create simple calculator using c programming. we requires one variable for operation like addition, subtraction, multiplication and division. we can tell the...
read more
In case of we have to check one variable and compare it's value with list of values of same then and then we can use switch case. for example create simple calculator using c programming. we requires one variable for operation like addition, subtraction, multiplication and division. we can tell the user to input the value 1 for +, 2 for - , 3 for * and 4 for /. and then we can compare that variable's value to the list of for cases, case 1, case 2, case 3 , case 4 and finally default case if none of other case is matched. We create this program using if...else if statement or switch case. If program like which day is today. then also we can use switch case. 1 for Monday ....7 for Sunday enter your choise compare by using switch(var) to different cases from case 1 to 7 and default. Break statement is always needed while using switch case. if there is no break statement in cases then all cases will be executed. read less
Comments
Dislike Bookmark

Training Centre

If you want to test a variable against the single number (i.e. n==1,n==2, n==3 , etc.) rather than a range of numbers (i.e. (n>=1 && n<=10)), then switch statement is a better option.
Comments
Dislike Bookmark

Thank You for your question... Switch statement is better than multiple if statements when we are having multiple options for the same variable. Thanks, Team DishaaPro www.dishaapro.com
Comments
Dislike Bookmark

Programming Trainer

Most of the time switch is better than if statement in c program as it enhances the time complexity of the program.
Comments
Dislike Bookmark

Technology expert

In swich-case ,if the conditions are same we can write one print statement.where as in multiple if though the conditions are same ,we have to write different print for each conditions.
Comments
Dislike Bookmark

Unique Coder

A switch statement is generally best to use when you have more than two conditional expressions based on a single variable of numeric type.
Comments
Dislike Bookmark

Teacher

If there are so many options to choose.
Comments
Dislike Bookmark

Tutor

Both Switch and if performs almost the same function, where both comes under control statements. switch is better if the number of cases is more and distinct.
Comments
Dislike Bookmark

J2ee Trainer

Switch statement is most useful when we have multiple conditions on a same variable.But when there are multiple conditions then if else is a better option.
Comments
Dislike Bookmark

View 13 more Answers

Related Questions

What is the meaning of \n and \t in C language?
is new line and \t is for tab
Priya
0 0
5
How do I execute the Java program?
javac nameofprogram.java java nameofprogram note***:Name of program should be same as that of your class name having main method *** above steps are used to execute programs on command line
Sharmistha
0 0
6
What is the cost of the course?What kind of questions are asked for interviews from C language??
Most questions are from Pointers
Chandana
What are the applications of C programming?
Hi Poulami Hope you are doing good. C programming language is a versatile and widely used language that has found applications in various domains. Some of the key applications of C programming include: 1....
Poulomi
0 0
6
What is a stream?
Transferring data from one location to another location...
Nilam

Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com

Ask a Question

Related Lessons

Some interview questions for freshers on C language
Q1. What are the two forms of #include? There are two variants of #include. The one is #include and the other one is #include”file”. In general the first form that is #include is used to...

Shiladitya Munshi

0 0
0
C, Cpp, Java, Python, Javascript Programming Languages
Learning C is as good as Learning a Natural Language(such as English, Hindi, Telugu, Tamil etc) We use Natural Languages to communicate with humans whereas we use Programming Languages such as C, Cpp,...
V

Vamshi

0 0
0
Dynamic Memory Allocation in C using malloc()
#include <stdio.h>#include <conio.h>//#include <malloc.h> OR#include <stdlib.h>void main(){ int *ptr, i, n, sum = 0; printf("how many elements ? "); scanf("%d", &n);...

Sankhadeep Pujaru

0 0
0
Swapping variable contents using C
/* WAP to swap the content of variables using C*/ //Header files #include<stdio.h>#include<conio.h> //Main function void main(){ //Variable declaration of type integer int a,b,c; //function...
S

Salim Ahmed Ansari

0 0
0
What is a Programming Language
What is a Language? Language is a communication system of human. What is a programming Language? A programming Language is a formal constructed language design to communicate...

Clevigour Solutions

0 0
0

Recommended Articles

Brilliant Academy, a reputed B. Tech Tuition...

Brilliant Academy is one of the reputed institutes for B.Tech tuition classes. This institute is specialised in delivering quality tuition classes for B.E, Engineering - all streams and Engineering diploma courses. Incorporated in 2012, Brillant Academy is a brainchild of Mr Jagadeesh. The main motto of the academy is to...

Read full article >

Lasya Infotech: An educational Training...

Lasya Infotech is a Hyderabad based IT training institute founded in 2016 by O Venkat. Believing in his innovation, passion and persistence and with a diverse blend of experience, he started his brainchild to deliver exemplary professional courses to aspiring candidates by honing their skills. Ever since the institute envisions...

Read full article >

Learn Microsoft Excel

Microsoft Excel is an electronic spreadsheet tool which is commonly used for financial and statistical data processing. It has been developed by Microsoft and forms a major component of the widely used Microsoft Office. From individual users to the top IT companies, Excel is used worldwide. Excel is one of the most important...

Read full article >

Learn Hadoop and Big Data

Hadoop is a framework which has been developed for organizing and analysing big chunks of data for a business. Suppose you have a file larger than your system’s storage capacity and you can’t store it. Hadoop helps in storing bigger files than what could be stored on one particular server. You can therefore store very,...

Read full article >

Find C Language Classes near you
C Language Classes in Bangalore
C Language Classes in Hyderabad
C Language Classes in Delhi
C Language Classes in Pune
C Language Classes in Chennai
C Language Classes in Mumbai
C Language Classes in Kolkata
C Language Classes in Noida
C Language Classes in Gurgaon
C Language Classes in Ghaziabad

Looking for C Language Classes?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you