Hey ppl. I am currently doing some coursework at uni and would like some help on the locale.h.
I am reading a line of a csv file into a buffer and then putting each number into a member of a structure. The thing is the numbers are using a comma's as the decimal point instead of a dot. Can someone tell me how i would use the locale.h to change how the decimal point is read.
thanx
maybe this might help?? The simplest solution would be to read the line into a buffer then replace all the commas with a period.
There is other ways to do it but I have been told to try and use the locale.h.
anyway i found this code which tells me what the decimal point is :
I fully understand this code but I cant figure out how to change the locale. Can someone please tell me the code to replace the decimal point?Code:#include<stdio.h> #include<locale.h> int main() { struct lconv *ptr; char *decimal; setlocale(LC_ALL, ""); ptr = localeconv(); decimal = ptr->decimal_point; }
thanx
replacing the comma with a decimal point is pretty trivel. What is the field separator in that file -- probably tabs since commas are used in the numbers?
Code:char *p; FILE *fp = fopen("somefile.cvs","r"); char iobuf[255]; // or some other bigger or smaller number while( fgets(iobuf,sizeof(iobuf),fp) ) { while( (p = strchr(iobuf,',')) != 0) *p = '.'; // now break the line into its individual fields assumed to be floating-pointer // integers separated by tabs p = strtok(buffer,"\t"); while(p) { float a = atof(p); // put a into whatever struct you want it. p = strtok(0,"\t"); } }
Last edited by Ancient Dragon; 03-01-2006 at 03:24 PM.
I found that setting local to German will work. But you will want to change it back when done.
[edit]it appears setlocal() does not affect system-wide local setting -- only the currently running program instance. so there is really no need to set it back to original value unless you need it reset for some other reason. [/edit]Code:#include<stdio.h> #include<locale.h> #include <string.h> #include <math.h> void rdfile() { float a; FILE *fp = fopen("somefile.cvs","r"); if(fp == 0) return; while( fscanf(fp,"%f",&a) > 0) { printf("%f\n",a); } fclose(fp); } int main() { struct lconv *ptr; char *decimal; setlocale(LC_ALL, "German"); ptr = localeconv(); decimal = ptr->decimal_point; rdfile(); return 0; }
Last edited by Ancient Dragon; 03-01-2006 at 04:00 PM.
thanx for the help. I will just change the country to german.
Can you tell me where I can find a list of locals and the details of each one?
I have no idea. you might read some of the links thatgoogle produces.
