已知字母A的ASCII代码值为65,若变量kk为char型,以下不能正确判断出比中的值为大写字母的表达式是
A.kk>='A'&&kk<='Z'
B.!(kk>='A'||kk<='Z')
C.(kk+32)>='a'&&(kk+32)<='z'
D.isalpha(kk)&&(kk<91)
A.kk>='A'&&kk<='Z'
B.!(kk>='A'||kk<='Z')
C.(kk+32)>='a'&&(kk+32)<='z'
D.isalpha(kk)&&(kk<91)
A.kk>='A'&& kk<='Z'
B.!(kk>='A'‖kk<='Z')
C.(kk+32)>='a'&&(kk+32)<='z'
D.isalpha(kk)&&(kk<91)
A.kk>=′A′&& kk<=′Z′
B.!(kk>=′A′||kk<=′Z′)
C.(kk+32)>=′a′&&(kk+32)<=′Z′
D.isalpha(kk)&&(kk<91)
A.kk>='A'&&kk<='Z'
B.!(kk>='A'‖kk<='Z')
C.(kk+32)>='a'&&(kk+32)<='z'
D.isalpha(kk)&&(kk<91)
A.kk>='A'&&kk<='Z'
B.!(kk>='A'‖kk<='2')
C.(kk+32)>='a'&&(kk+32)<='2'
D.isalpha(kk)&&(kk<=91)
A.67,D
B.B,C
C.C,D
D.不确定的值
有以下程序
#include<stdio.h>
main()
{char el,c2;
el=‘A’+‘8’-14’:
c2=‘A’+‘8’-‘5’:
printf(“%e,%d\n”,c1,c2);
}
已知字母A的ASCII码为65,程序运行后的输出结果是
A.E,68
B.D,69
C.E,D
D.输出无定值
已知字符A的ASCⅡ代码值为65,以下程序运行时若从键盘输入:B33<回车>.则输出结果是()。
include
main()
{ char a,b;
a=getchar();scanf("%d",&B);
a=a-'A'+'0';b=b*2;
printf("%c%c\n",a,B);
}
A.表达式非法,输出零或不确定值
B.因输出项过多,无输出或输出不确定值
C.输出结果20,141
D.输出结果为20,141,20