题目内容

#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

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#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

#includevoid main ( ){int a=12;double b=3.1415926;printf("%6d##,%-6d##\n",a,a);printf("a=%o a=%x\n",a,a);printf("%14.10lf\n",b);}运行结果:(V代表空格,↙代表Enter)

A. 12
B. ,12
C. a=14 a=cVVV3.1415926000
D. VVVV12
E. ,12VVVV
F. a=14 a=cVVV3.1415926000
G. VVVV12
H. ,12VVVV
I. a=14 a=c3.1415926000
J. 12
K. ,12
L. a=14 a=c3.1415926000

C语言源程序文件的后缀是___,经过编译后生成目标文件的扩展名是_______,经过连接后生成可执行文件的扩展名是________。

源程序的执行要经过__、 _、_________和______四个步骤

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