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 #include <stdio.h>

#include <stdlib.h>
#include <string.h>
 
 main()
  {
  
   int num,i;
   char input[10]; 
   for(i=0;i<=4;i++)
   
   
   {
   
   printf("Please input a string :");
   scanf("%s",input);
   
   
         if(strcmp(input,"mon")==0) printf(" Today is Monday\n"); 
   else  if(strcmp(input,"tue")==0) printf(" Today is Tuseday\n");  
   else  if(strcmp(input,"wed")==0) printf(" Today is Wednesday\n");  
   else  if(strcmp(input,"thu")==0) printf(" Today is Thursday\n");   
   else  if(strcmp(input,"fri")==0) printf(" Today is Friday\n");   
   else  if(strcmp(input,"sat")==0) printf(" Today is Saturday\n");  
   else  if(strcmp(input,"sun")==0) printf(" Today is Sunday\n");  
   else  printf("aaaaaaaaa");
  }
    
  }
 
2013/12/23 林中誠老師 判斷奇偶數 2013/12/23 林中誠老師 判斷奇偶數

#include<stdio.h>

#include<stdlib.h>

main(){

int a;

int b;

int i=0;

while (i<5){

printf("輸入數字:");

scanf("%d",&a);

b= a % 2;

if(b==0){

printf("%d為偶數\n",a);

}

else{

printf("%d為奇數\n",a);

}

   i++;

}

system("PAUSE");

}

 
2013/12/23 林中誠老師 判斷星期 2013/12/23 林中誠老師 判斷星期

 #include <stdio.h>
#include <stdlib.h>
  main()
  {
  
   int input,num,i;
    
   for(i=0;i<=4;i++)
   
   
   {
   
   printf("Please input a numer :");
   scanf("%d",&input);
   
  switch (input)
    
    {
    
    case 1: printf(" Today is Monday\n");  break; 
    case 2: printf(" Today is Tuseday\n");  break; 
    case 3: printf(" Today is Wednesday\n");  break; 
    case 4: printf(" Today is Thursday\n");  break; 
    case 5: printf(" Today is Friday\n");  break; 
    case 6: printf(" Saturday\n");  break; 
    case 7: printf(" Sunday\n");  break; 
 }
    
  }
     
    system("pause"); 
   }