题目内容

有输入语句:scanf("a=%d,b=%d,c=%d",&a,&b,&c);为使变量 a的值为1,b的值为3,c的值为2,则正确的数据输入方式是( )。(V代表空格,↙代表Enter)

A. 132↙
B. 1,3,2↙
C. a=1Vb=3Vc=2↙
D. a=1,b=3,c=2↙

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#includevoid main ( ){char c1='a',c2='b',c3='c',c4='\101',c5='\116';printf("a%c b%c\tc%c\tabc\n",c1,c2,c3);printf("\t\b%c %c",c4,c5);}运行结果:

A. aa bb cc abc AN
B. aa bb cc abc A N
C. aa bb cc abcA N

#includevoidmain ( ){int y=3,x=3,z=1;printf("%d %d\n",(++x,y++),z+2);}运行结果:

A. 4 3
B. 3 4
C. 3 3
D. 2 4

#includevoidmain ( ){int a=12345;float b=-198.345, c=6.5;printf("a=%4d,b=%-10.2e,c=%6.2f\n",a,b,c);}运行结果:

A. a=12345,b=-1.98e+002,c= 6.50
B. 12345,-1.98e+002, 6.50
C. a=1234,b=-1.98e+002,c= 6.50
D. 1234,-1.98e+002, 6.50

#includevoid main ( ){int x=-2345;float y=-12.3;char d='a';printf("%6d,%6.2f,%6c",x,y,d);}运行结果:(V代表空格,↙代表Enter)

A. -2345,-12.30
B. -2345,-12.30a
C. V-2345,V-12.30VVVVVa
D. -2345,-12.30VVVa

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