1.分行赋值:如:
int a[3][4] = {{1,2,3,4},{5,6,7,8},{9,10,11,12}};
2.全部数据写在一个大括号内,如:
int a[3][4]= {1,2,3,4,5,6,7,8,9,10,11,12};
3.部分元素赋值,如:
int a[3][4] = {{1},{5},{9}};
仅对a[0][0]、a[1][0]、a[2][0]赋值,其余元素均初始化0。
4.如果对全部元素赋初值,则第一维的长度可以不指定,但必须指定第二维的长度。例:
int a[ ][4]={1,2,3,4,5,6,7,8,9,10,11,12};
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