8th program

Objective

Understanding the use of Switch.

Theory

A switch statement is a type of control statement that exists in most modern imperative programming languages (e.g., C, C++, C#, and Java). Its purpose is to allow the value of a variable or expression to control the flow of program execution. In some other programming languages, a statement that is syntactically different but conceptually the same as the switch statement is known as a case statement or a select statement.
A typical syntax is that the first line contains the actual word switch followed by either the name of a variable or some other expression allowed by the language's syntax. This variable or expression is usually referred to as the "control variable" of the switch statement. After this line, following lines define one or more blocks of code that represent possible branches that program execution may take.

Each block begins with a line containing the case keyword followed a value that the control variable may have. If the value of the control variable matches this value, program execution will jump to that block of code. If not, the value specified in the next block (if present) is examined and the process repeats.


Task

. Accept two numbers from the user. Then, display a menu with four options as given below:
1. Add numbers
2. Subtract second number from first
3. Multiply numbers
4. Divide first number by second number
* Prompt the user to enter a choice. Using switch to perform the appropriate calculation and display the result.


Coding:
#include<stdio.h>
void main(void)
{
float a=0.0,b=0.0;
char s;
printf("TYPE 1ST NUMBER THEN OPRETER THAN 2ND NUMBER\n");
scanf("%f %c %f",&a,&s,&b);
switch (s)
{
case'+':
printf("\n=%2.f",a+b);
break;
case'-':
printf("\n=%2.f",a-b);
break;
case'*':
printf("\n=%2.f",a*b);
break;
case'/':
printf("\n=%2.f",a/b);
break;
default:
printf("\nwrong opretor");
}
printf("\n\n");
}