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How do you determine the size of a file in C?
...include <sys/stat.h>
#include <sys/types.h>
off_t fsize(const char *filename) {
struct stat st;
if (stat(filename, &st) == 0)
return st.st_size;
return -1;
}
Changes:
Made the filename argument a const char.
Corrected the struct stat definition, which was...
How to check if a String is numeric in Java
...
Note that the . in your regex will match any character, not just the decimal separator character.
– jqno
Jul 11 '09 at 8:16
9
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Which characters need to be escaped when using Bash?
Is there any comprehensive list of characters that need to be escaped in Bash? Can it be checked just with sed ?
7 Answers...
How to get the number of characters in a std::string?
How should I get the number of characters in a string in C++?
12 Answers
12
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Maximum length for MySQL type text
...e to the max length of a text field in my MySQL database table. How many characters can a type text field store?
8 Answer...
Unsigned keyword in C++
...ng -> signed long
signed long
unsigned long
Be careful of char:
char (is signed or unsigned depending on the implmentation)
signed char
unsigned char
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lua和c/c++互相调用实例分析 - C/C++ - 清泛网 - 专注C/C++及内核技术
...te(void) ;
//加载lua脚本文件
int luaL_loadfile(lua_State *L, const char *filename);
lua和c/c++的数据交互通过"栈"进行 ,操作数据时，首先将数据拷贝到"栈"上，然后获取数据，栈中的每个数据通过索引值进行定位，索引值为正时表示相对于...
各编程语言读写文件汇总 - C/C++ - 清泛网 - 专注C/C++及内核技术
...puts简单读写，一般用于处理文本文件。
int main(int argc, char* argv[])
{
FILE *fp = NULL;
/*打开文件*/
if((fp = fopen("test.txt", "w+")) == NULL)
{
printf("文件打开出错，请检查文件是否存在！\n");
return -1;
}
else
{
printf("文件已经...
what is Segmentation fault (core dumped)? [duplicate]
...ith your arguments of main. The main function should be int main(int argc, char *argv[]), and you should check that argc is at least 2 before accessing argv[1].
Also, since you're passing in a float to printf (which, by the way, gets converted to a double when passing to printf), you should use the...
How can I pad a String in Java?
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What if you need to lpad with other chars (not spaces) ? Is it still possible with String.format ? I am not able to make it work...
– Guido
Aug 11 '09 at 15:48
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