a1496785的博客

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char数组长度1.strlen：可得实际长度，以\0结尾2.sizeof：得到数据声明长度char test[6] ="hello";printf("\ntest=%s",test);printf("\nsizetest=%d",strlen(test));printf("\nsizeAtest=%d",sizeof(test));console打印：test=hellosizetest=5sizeAtest=6char testA[7] ="he\0llo";p