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void itoa ( int val, char* buf );
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void itoa_flawed(int val, char* buf)
{
// deal with special case
if(val == 0)
{
buf[0] = '0';
buf[1] = '\0';
return;
}
bool negative = (val < 0);
int abs_val = negative ? -val : val;
unsigned int char_cnt = 0;
while(abs_val > 0)
{
buf[char_cnt] = abs_val % 10 + '0';
char_cnt ++;
abs_val = abs_val / 10;
}
if(negative) buf[char_cnt++] = '-';
//reverse the string
unsigned int i = 0;
while(i < char_cnt / 2)
{
char temp = buf[i];
buf[i] = buf[char_cnt-i-1];
buf[char_cnt-i-1] = temp;
i++;
}
buf[char_cnt] = '\0';
}
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char buf[40];
itoa_flawed(1 << 31,buf);
cout<<buf;
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#include <stdio.h>
#include <sqlite3.h>
static int callback(void *NotUsed, int argc, char **argv, char **azColName){
int i;
for(i=0; i<argc; i++){
printf("%s = %s\n", azColName[i], argv[i] ? argv[i] : "NULL");
}
printf("\n");
return 0;
}
i ......