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T O P I C R E V I E W
ovince	Posted - 10/22/2006 : 4:17:36 PM hi, Any idea why the attempt to trim strings in the loop does not work (the data are read from file)? void test4() { string name = "file.dat"; FILE *stream; stream = fopen( name, "r" ); string tmps; for (int m=0; m<7; m++) { fscanf( stream,"%s\n", tmps); string ts = tmps.Left(5); printf("%s\n", ts); } fclose( stream ); } thanks oliver
2 L A T E S T R E P L I E S (Newest First)
ovince	Posted - 10/25/2006 : 1:24:05 PM thank you Deanna
Deanna	Posted - 10/22/2006 : 11:14:34 PM Hi Oliver. The problem is that the address of tmps, which is passed to the fscanf() is not correct. The string varibale tmps has not been properly initialized before its address is used. Actually, scanf() is a C function while string is a C++ stuff. Better not mix them. I suggest that you change your code like follows: void test4() { #define MAXLEN 30 char cTmp[MAXLEN]; string name = "f:\\temp\\file.dat"; FILE *stream; stream = fopen( name, "r" ); for (int m=0; m<7; m++) { fscanf( stream, "%s", cTmp); string ts(cTmp, 5); printf("%s\n", ts); } } Note: please modify MAXLEN as you need. Deanna OriginLab Technical Services Edited by - Deanna on 10/22/2006 11:23:41 PM

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