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中文乱码问题可以在浏览器上设置编码方式为GB2312或者在html的最前面加上编码设置 <head> <meta http-equiv="Content-Type" content="text/html; charset=GB2312"> </head> <p>中文</p> 这样就能告诉浏览器使用G 阅读全文
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我们用gcc编译程序时，可能会用到“-I”（大写i），“-L”（大写l），“-l”（小写l）等参数，下面做个记录： 例子1： gcc -o example1 example1.c -I /usr/local/include/freetype2 -lfreetype -lm 上面这句话在编译examp 阅读全文
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To read a file in C, you must create a pointer to the file. To do this, you use the FILE data type:#include <stdio.h> /* You need this include file to 阅读全文
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C and C++ allow various types of operators. By now, you should be familiar with the basic binary operators +, -, *, / and the boolean operators <, >, 阅读全文
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Masking lets you modify a specific bit (or bits) using a bit pattern (called the mask) and a logical bitwise operator (AND, OR, or XOR). By changing t 阅读全文
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Dangling pointers in computer programming are pointers that pointing to a memory location that has been deleted (or freed). Cause of dangling pointers 阅读全文
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Self Referential structures are those structures that have one or more pointers which point to the same type of structure, as their member. In other w 阅读全文
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(Remember that strcmp() is tricky! It returns 0 when the strings are the SAME, >0 if str1 is greater, or <0 if str2 is greater) strtok() Description T 阅读全文
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helloworld.c #include<stdio.h> #include<stdlib.h> void Hello(); void Hello() { printf("Hello World!\n"); } int main() { void (*Hello_ptr)() = Hello; / 阅读全文