C语言数组定义时可以不开辟长度吗？ C语言中定义数组时可以不定义长度吗，这样：uint8 arr...
c\u8bed\u8a00\u4e2d\u5b9a\u4e49\u4e00\u4e2a\u6570\u7ec4\u53ef\u4ee5\u4e0d\u5199\u6570\u7ec4\u7684\u957f\u5ea6\u5417\uff1f\u4e0d\u53ef\u4ee5\uff0c\u5982\u679c\u4e0d\u80fd\u786e\u5b9a\u957f\u5ea6\uff0c\u8bf7\u7528STL\u5e93\u91cc\u7684LIST,MAP,SET\u7b49\u6570\u636e\u7c7b
\u6216\u8005\u5f00\u7684\u6570\u7ec4\u5f00\u7684\u5927\u4e00\u4e9b\uff0c\u4fdd\u8bc1\u4f60\u4e0d\u4f1a\u8d8a\u754c\uff0c\u591a\u4f59\u7684\u90e8\u5206\u4e0d\u9002\u7528\u5c31\u597d
\u5728\u5b9a\u4e49\u7684\u6570\u7ec4\u7684\u65f6\u5019\uff0c\u53ef\u4ee5\u901a\u8fc7\u53d8\u91cf\u5b9a\u4e49\u957f\u5ea6\u5982\uff1a
scanf("%d", arrayLen);
int[] data = new int[arrayLen];
C\u8bed\u8a00\u4e2d\u53ef\u4ee5\u5b9a\u4e49\u4e2a\u6570\u4e0d\u786e\u5b9a\u7684\u52a8\u6001\u6570\u7ec4\uff0c\u4f46\u4e0d\u662f\u7528uint8 array[];\u8fd9\u6837\u6765\u5b9a\u4e49\u7684\uff0c\u8fd9\u6837\u4f1a\u62a5\u9519\u3002\u5b9a\u4e49\u4e2a\u6570\u4e0d\u786e\u5b9a\u7684\u52a8\u6001\u6570\u7ec4\u5fc5\u987b\u5148\u58f0\u660e\u4e00\u4e2a\u6307\u9488\uff0c\u7136\u540e\u7528malloc\u4e3a\u8fd9\u4e2a\u6307\u9488\u5206\u914d\u4e00\u6bb5\u8fde\u7eed\u7684\u7a7a\u95f4\uff0c\u7136\u540e\u9000\u51fa\u7a0b\u5e8f\u7684\u65f6\u5019\u8981\u8bb0\u5f97\u4f7f\u7528free\u91ca\u653e\u8fd9\u4e9b\u53d8\u91cf\u7a7a\u95f4\uff0c\u5426\u5219\u4f1a\u9020\u6210\u5185\u5b58\u6cc4\u9732\u3002
\u6bd4\u5982\u4f60\u8981\u5b9a\u4e49\u4e00\u4e2a\u5b57\u7b26\u578b\u7684\u52a8\u6001\u6570\u7ec4\uff0c\u53ef\u4ee5\u5148\u58f0\u660e\u4e00\u4e2a\u5b57\u7b26\u578b\u6307\u9488\uff1a
char *CharNew;
\u7136\u540e\u5728\u9700\u8981\u5b9a\u4e49\u6570\u7ec4\u7684\u65f6\u5019\uff0c\u7528\u4e0b\u9762\u8bed\u53e5\u5f00\u8f9f\u4e00\u5b9a\u91cf\u7684\u8fde\u7eed\u7a7a\u95f4\uff1a
CharNew=(char*)malloc(10*sizeof(char));
\u8fd9\u6837\u4f60\u5c31\u53ef\u4ee5\u50cf\u4e00\u822c\u6570\u7ec4\u4e00\u6837\uff0c\u7528CharNew[1]\u6765\u8bbf\u95ee\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\uff1b
\u5f53\u9000\u51fa\u7a0b\u5e8f\u65f6\uff0c\u4f60\u8981\u4f7f\u7528\uff1a
free(CharNew);\u6765\u91ca\u653e\u6570\u636e\u7a7a\u95f4\u3002
int a[] = {1, 2, 3};
则a的长度为3。
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