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【单选题】
若变量 i 、 j 、 s 已正确定义, 以下 语句: for ( i=0,s=0;i<10;i++ ) for ( j=0;j<10;j++ ) s+=i * j ; 等价于 ( )。A.
for ( i=0,s=0;i<10;i++ ) for ( j=0,s=0;j<10;j++ ) s+=i*j ;
B.
for ( i=0,s=0,j=0;i<10;i++ ) for ( ;j<10;j++ ) s+=i*j ;
C.
for ( s=0;i<10;i++ ) for ( i=0,j=0;j<10;j++ ) s+=i*j ;
D.
for ( i=0,s=0;i<10; ) {for ( j=0;j<10;j++ ) s+=i*j ; i++ ;}
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