wlanip 192.168.1.22
char ps[128]={0};
char ptr[32]={0};
char *ret;
int len1,len2;
printf("wlani=%s\n",wlanip);
strcpy(ptr,wlanip);
printf("ptr=%s\n",ptr);
ret = strrchr(ptr,'.');
len1=strlen(ptr);
len2=strlen(ret);
ptr[len1-len2]='\0';
printf("ptr=%s\n",ptr);
strcat(ptr,".1");
printf("ptr=%s\n",ptr);
输出:192.168.1.1
截取字符串前面字符并替换
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转载自blog.csdn.net/ldinvicible/article/details/83027782
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