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¨Ò #include <stdio.h> 
#include <stdlib.h>

int main(void)
{
        int x;
        printf(" Enter a number¡G");
        scanf("%d",&x);
        if(x%2==0)
        {
                 printf("x is even.\n");
        }
        else
        {
                 printf("x is odd.\n");
        }
        system("pause");
        return 0;
}
¨Ò #include <stdio.h> 
#include <stdlib.h>

int main(void)
{
        int x;
        printf(" Enter a score¡G");
        scanf("%d",&x);
        if(x==100)
        {
                 printf("Great!!\n");
        }
        else
        {
                 if(x<60)
                {
                        printf("Too Bad!!\n");
                }
                else
                {
                        printf("So So...\n");
                }
        }
        system("pause");
        return 0;
}
¨Ò #include <stdio.h> 
#include <stdlib.h>

int main(void)
{
        int x;
        printf(" Enter a score¡G");
        scanf("%d",&x);
        if(x==100)
        {
                 printf("Great!!\n");
        }
        else if(x<60)
        {
                 printf("Too Bad!!\n");
        }
        else
        {
                 printf("So So...\n");
        }
        system("pause");
        return 0;
}
¨Ò #include <stdio.h> 
#include <stdlib.h>

int main(void)
{
        int x;
        printf(" Enter a score¡G");
        scanf("%d",&x);
        switch(x)
        {
                 case 100:
                         printf("Great!!\n");
                         break;
                 case 80:
                         printf("good!!\n");
                         break;
                 case 60:
                         printf(" pass!!\n");
                         break;
                 case 40:
                         printf("bad!!\n");
                         break;
                 case 20:
                         printf("too bad!\n");
                         break;
                 case 0:
                         printf("game over!!\n");
                         break;
                 default:
                         printf("SOSO!!\n");
        }
        system("pause");
        return 0;
}

¡°°j°é±Ô­z

¨Ò #include <stdio.h> 
#include <stdlib.h>

int main(void)
{
        int i,num,sum=0;
        printf("Input a number¡G");
        scanf("%d",&num);

        for(i=1;i<=num;i++)
        {
                 sum=sum+1;
        }
        printf("sum(1~%d)¡G%d",num,sum);
        system("pause");
        return 0;
}
¨Ò #include <stdio.h> 
#include <stdlib.h>

int main(void)
{
        int i,num1,num2,sum;
        printf("Input first number¡G");
        scanf("%d",&num1);
        printf("Input second number¡G");
        scanf("%d",&num2);
        
        for(i=num1,sum=0;i<=num2 && sum<=1000;i++)
        {
                 sum=sum+1;
        }
        printf("sum(%d~%d)¡G%d",num1, i-1, sum);
        system("pause");
        return 0;
}
¨Ò #include <stdio.h> 
#include <stdlib.h>

int main(void)
{
        int i,num,sum=0;
        printf("Input a number¡G");
        scanf("%d",&num);

        while( i<=num)
        {
                 sum=sum+1;
                 i=i+1;
        }
        printf("sum(1~%d)¡G%d", num, sum);
        system("pause");
        return 0;
}
¨Ò #include <stdio.h> 
#include <stdlib.h>

int main(void)
{
        int i,num,sum=0;
        printf("Input a number¡G");
        scanf("%d",&num);
        i=1;
        do
        {
                 sum=sum+1;
                 i=i+1;
        }while ( i<=num);
        printf("sum(1~%d)¡G%d",num,sum);
        system("pause");
        return 0;
}

¡°break»Pcontinue

¨Ò #include <stdio.h> 
#include <stdlib.h>

int main(void)
{
        int i,num,sum=0;

        for(i=0;i<10;i++)
        {
                 printf("Input a number¡G");
                 scanf("%d",&num);
                 if(num==0)
                 {
                         continue;
                  }
                  else if(num<0)
                 {
                         break;
                  }
                  else
                 {
                         sum=sum+num;
                  }
        }
        printf("sum(0<num)¡G%d",sum);
        system("pause");
        return 0;
}

¡°±_ª¬±Ô­z

¨Ò #include <stdio.h> 
#include <stdlib.h>

int main(void)
{
        int i,j;

        for(i=2;i<10;i++)
        {
                 for(j=1;j<10;j++)
                 {
                          printf("%d x %d = %d\n", i, j, i*j);
                 }
        }
        system("pause");
        return 0;
}

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