我的問題是,STRCMP()函數提出了以下問題:的strcmp()給段錯誤:從整數警告11和指針
main.c:35: warning: passing argument 1 of ‘strcmp’ makes pointer from integer without a cast
雖然編譯和以下運行程序時:
Segmentation fault: 11
我知道錯誤是什麼意思,我只是不知道任何其他方式來做到這一點...有沒有想過使用itoa()或sprintf(),但我需要在十六進制的校驗和,所以看不到我怎麼能做到這一點。
的代碼如下:
#include "checksum.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main()
{
char nmea[] ="$GPRMC,131637.000,A,5820.0658,N,00834.5652,E,0.00,,090911,,,A*7E";
unsigned char checksum[] = "00";
char data[82];
int length = strlen(nmea);
int k = 0;
int i;
unsigned char XOR;
checksum[0] = nmea[(length-2)];
checksum[1] = nmea[(length-1)];
for(i=1;i < (length-3);i++){
data[(i-1)] = nmea[i];
}
int dataLength = strlen(data);
for (XOR = 0, i = 0; i < dataLength; i++) //XORer for å finne checksum
XOR ^= (unsigned char)data[i];
printf("*******************************************************\n");
printf("Calculating checksum...\n");
printf("Read checksum: %s\n",checksum);
printf("Read data: %s\n",data);
printf("Calculated checksum: %X \n",XOR);
if(strcmp(XOR,checksum) == 0){ //sammenligner checksumer.
printf("Checksum: OK!\n");
//return 1;
}
else{
printf("Checksum: Mismatch!\n");
//return 0;
}
printf("*******************************************************\n");
//nmeachecksum(buf);
return 0;
}
任何幫助,不勝感激!
使用十六進制到整數函數結束:http://johnsantic.com/comp/htoi.html並轉換NMEA可打印的十六進制。然後我按照你的建議進行了一次if測試。謝謝! – StianL 2012-04-11 09:34:34