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1 在C语言中，要求运算对象必须是整型的运算符是 %
2 int i = j = 5；→这个定义方法是错的：note: each undeclared identifier is reported only once for each function it appears in。/* int i =5， j = 5；是对的。 */
3 将整型a，b中较大的数复制给整型c：c = (a>b)? a : b; √
4 在C语言中,退格符是 \b :
5 int a = 7; float x = 2.5,y = 4.7; 则表达式 x + a % 3 * ( int ) ( x + y ) % 2 / 4 的值是: 2.50000
6 int x , i , j ,k; 则x = ( i = 4, j = 16, k = 32 ); x 的值为: 32
1 int main() 2 { 3 int x,j,i,k; 4 x = (i = 4, j = 45 , k = 32); 5 printf("%d",x); 6 return 0; 7 8 } 9 /*输出结果为32*/
7 int x = 8, y = 3;问 printf("x = 8,y = 3\n x--:%d ,--y:%d\n",x--,--y); 的输出结果是多少?
int x = 8, y = 3; printf("x = 8,y = 3\n x--:%d ,--y:%d\n",x--,--y); int a = 8 , b = 3; printf("a = 8,b = 3\n a++:%d,++b:%d\n",a++,++b); /* 结果: x = 8,y = 3 x--:8 ,--y:2 a = 8,b = 3 a++:8,++b:4 */
8 设有 int a = 1,b = 2,c = 3, d = 4 ，m = 2,n = 2;则执行语句( m = a > b ) && ( n = c > d );后n的值：
int a = 1,b = 2,c = 3, d = 4, m = 2,n = 2; ( m = a > b ) && ( n = c > d ); printf("%d",n); /*所得结果为2 */
9 已知 int a = 6; ,则执行 a += a- = a*a; 后，a的值为：
int a = 6; a += a -= a*a; printf("a的值为：%d\n" , a); /* a的值为： -60 a = 6-6*6 a + = a */
10 int x = 1,y = 1 , z = 1; 执行语句 ++x || ++ y && ++z ；后，求表达式 x + y的值：3
int x = 1, y = 1, z = 1; int k = ++x || ++y && ++z; printf(" k = ++x || ++y && ++z, k = %d\n", k); printf("x = %d\n" , x); printf("y = %d\n" , y); printf("x+y = %d\n" , x+y); int j = ++y && ++z; printf(" j = ++y && ++z, j = %d\n", j); printf("x = %d\n" , x); printf("y = %d\n" , y); printf("x+y = %d\n" , x+y); /* k = ++x || ++y && ++z, k = 1 x = 2 y = 1 x+y = 3 j = ++y && ++z, j = 1 x = 2 y = 2 x+y = 4 */
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原文地址：http://www.cnblogs.com/zanglie/p/5202524.html
