09-Selection Structure (ii)

Learning Focus:

• Switch...case statements

Learning content:

Switch...case is a multi-branch selection statement in the general form of:
switch (expression) {
case constant Expression 1: statement 1;
Case constant Expression 2: statement 2;
...
case constant Expression N: statement n;
Default: Statement n+1;
}

Instance:

#include <stdio.h>

int main(){

int a;

printf("Input integer Number:");

scanf("%d", &a);

Switch (a){

Case 1:printf("Monday\ n"); Break ;

Case 2:printf("Tuesday\ n"); Break ;

Case 3:printf("Wednesday\ n"); Break ;

Case 4:printf("Thursday\ n"); Break ;

Case 5:printf("Friday\ n"); Break ;

Case 6:printf("Saturday\ n"); Break ;

Case 7:printf("Sunday\ n"); Break ;

Default:printf("error\ n");

}

return 0;

}

Break statement to jump out of a switch statement .

Classic examples:

Enter an exam score, 90~100 output a,80~90 output b,70~80 output c,60~70 output d,60 The following output E, (requires switch)

09-Selection Structure (ii)