cif(a[i]>='A'&&a[i]='A'&&a[i]

cif(a[i]>='A'&&a[i]='A'&&a[i] i=(a+k) "i=!a" A:A(int i):a(i), ()()ea() ()()ea()() ()a()() ()()()a()() ()i() ()i() ()i()() N阶矩阵A*A*A=A.证：秩I+秩(I-A)+秩(I-A)=2N if(s[i]>=‘a’&&s[i] a(i) = Mid(Text1.Text,i, (i?a[i-1]!='\n':1) 已知int i, a; 执行语句i = (a = 3, a ++, -- a, a + 4, a + 5, ++a);后 (2+i)/i=a+bi a+b=? str[i]=str[i]-‘a’+‘A’这是什么意思?