해당 길이만큼 출력

 

[소스]

#include <stdio.h>
#include <stdlib.h>

int main(int argc, char *argv[])
{

 int nSendHeadMsgLen;
 int nSendBodyMsgLen = 123;

 char sSendHeadMsg[1024];

 nSendHeadMsgLen = 10;
 memset(sSendHeadMsg, 0x00, sizeof(sSendHeadMsg));
 sprintf(sSendHeadMsg,"%0*d", nSendHeadMsgLen , nSendBodyMsgLen);

 fprintf(stdout, "[%s]\n",  sSendHeadMsg);

}

[실행결과]

[0000000123]