#include
int main()
{
int a=1,b=0;
switch (a)
{
case 1:
switch (b)
{
case 0: printf("**0**");break;
case 1: printf("**1**");break;
}
case 2: printf("**2**");break;
}
return 0;
}
" />#include
int main()
{
int a=3,b=4,c=5,d=2;
if(a>b)
{
if(b>c)
{
printf("%d",d++ +1);
}
else
{
printf("%d",++d +1);
}
}
printf("%d\n",d);
return 0;
}
" />#include
int main()
{
int m;
printf("Input m: ");
scanf("%d", &m); //输入一个整数
if (m > 0) //是否为正数
{
if (m % 2 == 0) //是正数，且能被2整除，则是正偶数
{
printf("%d is a positive even\n", m);
}
else //不能被2整除，则是正奇数
{
printf("%d is a positive odd\n", m);
}
}
_______________ //判断是否为负数
{
_______________
{
printf("%d is a negative even\n", m); //是负偶数
}
else
{
printf("%d is a negative odd\n", m); //是负奇数
}
}
else
{
printf("%d is zero.It is an even\n", m);
}
return 0;
}
#include
int main()
{
char c;
printf("Please input a character:");
scanf("%c",&c);
if(c >='A'&&c <= 'Z')
c =_______________;
printf("%c\n",c);
return 0;
}
#include
int main()
{
int k;
scanf("%d",&k);
switch(k)
{
case 1: printf("%d",k++);
case 2: printf("%d",k++);
case 3: printf("%d",k++);
break;
default: printf("Full!");
}
return 0;
}
" />#include
#include
int main()
{
int x;
double y;
printf("Input x: ");
scanf("%d", &x); // 输入一个整数
if (x > 0)
{
y = exp(-x); //如果大于0，计算y=exp(-x)的值
}
_____________
{
y = 1; //x=0，则y=1
}
else
{
y = -exp(x); //x<0，则y=-exp(x)
}
printf("y=%f\n", y);
return 0;
}
" />#include
int main()
{
int a=1,b=2,m=0,n=0,k;
k=(n=b>a)||(m=a<b);
printf("%d,%d\n",k,m);
return 0;
} 
#include
int main()
{
int a=2, c=5;
printf("a = %%d, b = %%d\n", a, c);
return 0;
}
" />#include
int main()
{
char ch;
ch=getchar();
ch=ch+32;
printf("%c",ch);
return 0;
}
#include
int main()
{
int a=666,b=888;
printf("%d\n",a,b);
return 0;
}
" />#include
int main()
{
int n1=10,n2=20;
printf("_________",n1,n2);
return 0;
}要求按以下格式输出n1和n2的值，每个输出行都是从第一列开始，则空白处代码填写正确的是运行结果示例如下：n1=10n2=20