int len1 = len/2;
			int len2 = len-len1;
			char *fhalf = malloc(len1+1);
			memset(fhalf,0,len1+1);
			memcpy(fhalf,argv[1],len1);
			char *shalf = malloc(len2+1);
			memset(shalf,0,len2+1);
			memcpy(shalf,argv[1]+len1,len2);