🚀 go-pugleaf

Edward J. Hartnett (ejh@khonshu.colorado.edu) wrote:

: Hi, Here's a section from my program:

: main() {
:   int lat_zone;
:   int cell, isccp_cell, isccp_num;
:   float lat, lon;
:   float centlat[NUM_LAT_ZONES], centlon[MAX_ISCCP_NUM];

:   equare();

:   printf("Please enter the lat and long in degrees: ");
:   scanf("%f%f",&lat, &lon);
:   printf("%f, %f",lat,lon);

: And here's what I get when I try to run this program:

: > iscgrid
: Please enter the lat and long in degrees: 1.0, 1.0
: Segmentation fault
: >


: So obviously something is wrong with my scanf call, but what? I asked
: the guru here and he said he never uses scanf, he uses fgets to read
: from the input to a character array and then uses scanf to read that.
: Is this common proactice? Is there some better way? All advice
: welcome!
You didn't parse the comma between the two floats.
Write scanf("%f,%f"... in your source.
Why does your guru prefer sscanf? I don't see any reason.

: Thanks.
: --
: Such wind as scatters young men through the world, to seek their
: fortunes farther than at home, where small experience grows.
:                                                                  - Shakespeare
: Edward Hartnett	   ejh@khonshu.colorado.edu