//下面程序的输出结果是【1】___________。#includeusing namespace std;int main(){int a[6] = { 1,2,3,4,5,6 };for (int i = 0; i < 5; i++)cout << a[i] << " ";cout << endl;return 0;}
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//下列程序的输出结果是【1】__________。#includeintmain(){inta[2][3]={{1,2,3},{4,5,6}};inti,j,m=0;for(i=0;i<=1;i++)for(j=0;j<=i;j++)m=m+a[i][j];printf("i=%d,m=%d",i,m);return0;}
//下列程序的输出结果为【1】__________。#includeintmain(){inta[3][3]={1,3,5,7,4,16,13,18,17},sum=0,i,j;for(i=0;i<3;i++)for(j=0;j<3;j++)if(i==0||i+j==2)sum=sum+a[i][j];printf("sum=%d\n",sum);return0;}
//下列程序的运行结果是【1】__________。#includeint main(){int i = 5;char c[6] = "abcd";do { c[i] = c[i - 1]; } while (--i>0);puts(c);return 0;}
某一元弱酸可用NaOH标准溶液滴定,其化学计量点时的pH值为9.50,适用的指示剂是( )
A. 苯胺黄(pH变色范围为1.3~3.2)
B. 甲基橙(pH变色范围为3.1~4.4)
C. 中性红(pH变色范围为6.6~8.0)
D. 酚酞(pH变色范围为8.0~10.0)