| 6.4.1.The switch statement |
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To take one of a number of possible actions. |
switch is preferred over multiple if...else statements. |
The general form of a switch statement is |
switch(switch_expr)
{
case constant expr1 : S1;
S2;
break;
case constant expr1 : S3;
S4;
break;
.....
default : S5;
S6;
break;
}
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The clause 'default' is optional. |
#include <stdio.h>
main(){
int i,n = 5;
for(i = 1; i<n; i= i+1){
switch(i%2)
{
case 0 : printf("the number %d is even \n",i);
break;
case 1 : printf("the number %d is odd \n",i);
break;
}
}
}
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the number 1 is odd
the number 2 is even
the number 3 is odd
the number 4 is even |