What is an example of a c language switchcase statement?
Examples of c language switchcase statements are:
#include
intmain(void){
inta;
printf(“inputintegernumber:”);
scanf(“%d”, &a);
switch(a){
case1:printf(“Monday\n”);break;
case2:printf(“Tuesday\n”);break;
case3:printf(” Wednesday\n”);break;
case4:printf(“Thursday\n”);break;
case5:printf(“Friday\n”);break;
case6:printf(“Saturday\n” );break;
case7:printf(“Sunday\n”);break;
default:printf(“error\n”);
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return0;
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Program explanation:
This program is asking for a number and outputting the English word for the week it corresponds to.
Note:
1. The value of each constant expression after case cannot be the same, otherwise an error will occur.
2. After case, more than one statement is allowed, which can be enclosed without {}.
3, the case and default clauses can change the order of precedence, without affecting the program execution results.
4. The default clause can be omitted.
c language switch statement
Execute case2 because in the switch(x) x = 1, so the execution of case1, however, case1 this statement does not have a break, so switch(x) in the execution of the case1 after the case will continue to continue to execute the case statement in turn, until you hit the break out of the switch loop.
For “The self-additions of a are executed before the self-additions, when this program a self-additions are not executed other statements ah ？？？？？？” then you don’t see the program statement a++,b++ it self add up after the value is still assigned to a,b itself, not assigned to other variables such as c=a++;z=b++. If this is the case for other variables, then it is clear that the values of c and z will be the same as the textbook says they are before they are added. That is to say, the final printf in this program outputs the values of a and b, but the values of a and b have changed in the process of self-addition, which is equivalent to the statement a=a++, b=b++.
I will change your program, you will run the two programs and then look at them against each other to understand why the value of a,b is 2 and 1, the program is as follows
#include<stdio.h>
main()
{
intx=1, y=0, a=0,b=0,b=0,b=0,b=0,b=0,b=0,b=0,b=0,b=0,b=0,b=0,b=0,b=0,b=0,b=0,b=0,b=0,b=0,b=0,a=a++,b=b++, a=a++,b=b++. a=0,b=0,c=0,z=0;
switch(x)
{case1:
switch(y)
{
case0:c=a++;break;
case1:b++;break;
}
case2:c=a++,z=b++;break;
case3:a++,b++;
}
printf(“c=%d,z=%d\n”,c,z);
}
What’s the difference between for ++i and i++?
Simply put: ++i adds one to the value stored in i and “returns” the new, increased value to the expression that uses it; whereas i++ adds one to i, but returns the original, unincreased value.
What is an example of a c language switchcase statement?
Examples of c language switchcase statements are as follows:
#include<stdio.h>intmain(){inta;printf(“Inputintegernumber:”);scanf(“%d”,&a);if(a==1) {printf(“Monday\n”).
}elseif(a==2){printf(“Tuesday\n”);}elseif(a==3){printf(“Wednesday\n”);}elseif(a==4){printf(“Thursday\n”);}elseif(a==5)
< p>{printf(“Friday\n”);}elseif(a==6){printf(“Saturday\n”);}elseif(a==7){printf(“Sunday\n”);}else{printf(“error\n”);}return0;}
Switch as a C program statement
Switch is used in programming, such as C it is often used with Case, a judgment selection code. Its function is to control the flow of the process flow.
Linear translation: switch statement, that is, “switch” statement; case that is, “case”.
The syntax of a switch statement is as follows (switch, case, break and default are keywords):
switch(variable expression){ case constant 1: statement; break; case constant 2: statement; break; case constant 3: statement; break; … case constant n:statement;break; default:statement;break;}
What is an example of a c language switchcase statement?
Examples of c language switchcase statements are as follows:
Case constant expression 1:
Statement 1; can be multiple lines, with or without parentheses, up to the next case, is the statement range of this case.
[break;] parentheses, indicating that this statement can be without.
case constant expression 2:
[break;]……case constant expression n:statement n.
[break;][default:].
Rules for switch statements:
The case tag must be a constantExpressionSwitch can only be used for basic data types, which include int, char, etc. For other types, an if statement must be used.
The case tag must be a uniqueness expression; that is, no two cases are allowed to have the same value.
If there is no break between two case statements, after the matching case statement is executed, the following statements are executed sequentially until a break statement is encountered or a switch is terminated.
Two consecutive case statements means that the two cases are the same case.