format « char « C Data Type Q&A

1. warning: format ‘%s’ expects type ‘char *’, but argument 2 has type ‘int’    stackoverflow.com

I think this code and error is self-explanatory, but I don't know why?

Environment:
OS: Mac OS X 10.6.1
Compiler: i686-apple-darwin10-gcc-4.2.1

code:

 1  #include <stdio.h>
 2  #include <stdlib.h>
 3  #include <netdb.h>
 4 ...

2. The %x format specifier with an unsigned char in C    stackoverflow.com

I ran across the following example program and I don't exactly understand it's output:

#include <stdio.h>

int main( void ) {

    unsigned char i, m =0xFF, n=0x1;

    ...

3. strange output when formatting char    bytes.com

Hi I am just experimenting a little with typecasting and string formatting. Given the small program using MFC and compiled in Visual Studio Express. [code] short int i = 128; char c; CString str; int len; c = i; //move first byte of int to char. str.Format("Value of char is %#X", c); CClientDC dc(this); len = str.GetLength(); dc.TextOutA(10,10,str,len); [code] when i ...

4. char format specifier and segmentation fault    bytes.com

plz fix the bug... #include int main() { char ch; char i; printf("Enter an unsigned char : "); scanf("%d",&ch); printf("You have entered : %ud\n",ch); printf("binary representation...\n"); for(i=sizeof(char)*8-1;i>=0;i--) ((1<

5. vsprintf(char *str, const char *format, va_list ap, ...)?    bytes.com

goldfita@signalsguru.net My last post - http://groups.google.com/group/comp....df6ab20a6007d0 I have a little bit more challenging question this time. Suppose I have write_cmd(struct ast_connection *conn, char *msg, ...); I want to call it like (forgive the syntax) write_cmd(conn, str, p1, p2, ..., pn, k1, k2, ..., km); The parameters p1 to pn must be passed to write_cmd every time. The parameters k1 to km ...

6. char* format conversion    cboard.cprogramming.com

7. Json format - char exceptions    codeproject.com