【单选题】main() { int n1 = 72, n2 = 104; printf(“%d %d
”, n1, n2); printf(“n1=%d,n2=%d
”, n1, n2); printf(“n1=%c,n2=%c
”, n1, n2); } 上面程序输出结果为:
A. 65,66 n1=65,n2=66 n1=A,n2=B B. 72,104 n1=72,n2=104 n1=72,n2=104 C. 72,104 n1=H,n2=h n1=72,n2=104 D. 72,104 n1=72,n2=104 n1=H,n2=h
”, n1, n2); printf(“n1=%d,n2=%d
”, n1, n2); printf(“n1=%c,n2=%c
”, n1, n2); } 上面程序输出结果为:
A. 65,66 n1=65,n2=66 n1=A,n2=B B. 72,104 n1=72,n2=104 n1=72,n2=104 C. 72,104 n1=H,n2=h n1=72,n2=104 D. 72,104 n1=72,n2=104 n1=H,n2=h
举一反三
- 设n=n1n2，(n1，n2)=1，n1≥1，n2≥1，则φ(n)=φ(n1)φ(n2).若n=n1n2，n1≥1，n2≥1，则φ(n)=φ(n1)φ(n2)?
- 下面N×N的笛卡尔积的子集中，哪些可以构成函数？ A: {(n1,n2) | n1,n2∈N and n1+n2 <10} B: {(n1,n2) | n1,n2∈N and n2 = n1^2} C: {(n1,n2) | n1,n2∈N and n1 = n2^2} D: {(n1,n2) | n1,n2∈N and n2为小于n1的素数个数}
- 下面的关系哪些构成函数．(1){(n1，n2)|n1，n2∈N，n1+n2＜10}；(2){(n1，n2)|n1，n2∈R，n2=n12}；(3){(n1，n2)|n1，n2∈R，n22=n1)．
- 请问如下算法运行完之后n，n1，n2分别是多少？ var n1=10, n2=20; n = n1++; n = ++n1; n = n2--; n = --n2; A: n=18, n1=12, n2=18 B: n=11, n1=11, n2=19 C: n=12, n1=12, n2=18 D: n=19, n1=11, n2=19
- 请读程序:main(){ static int a[]={1,2,3,4,5,6} int *p; int i; p=a; *(p+3)+=2; printf("n1=%d,n2=%d\n:",*p,*(p+3));}其输出是________。A、n1=1;n2= 5 B、n1=2,n2=6 C、n1=1 n2=7 D、n1=1,n2=6