I have a function that reads in a file that looks like the following into a structure. I'm trying to make sure that the structure is being filled properly; and, it is filled correctly for Gender, Height, and Weight. However, I'm having trouble verifying that the Name (character array) part of it is filling properly.
Example file to read in:
Name,Gender,Height,Weight Tanner,M,71.8,180.25 John,M,70.75,185.3 Parker,F,65.25,120.3 Meeks,M,57.25,210.2 Big,M,57.5,150.1 Jackson,F,52.1,163.4 Struct Definition:
struct canData { char name[50]; char gender; float height; float weight; }CD[structSize]; // end struct BP Part of the loop that reads the file in:
char name[50]; char gender; float height; float weight; int position = 0; filePtr = fopen(fileName, "r"); // open file if (filePtr == NULL) // error check opening file { printf("Opening file failed. Please reenter filename."); exit(1); // WILL THIS RETURN TO MENU? } // end if // skip header line of file char buffer[100]; fgets(buffer, 100, filePtr); while (fscanf(filePtr, "%[^,], %[^,], %f, %f", &name, &gender, &height, &weight) == 4) // read in { printf("%s\n", name); // DEBUG ATTEMPT printf("%s\n", CD[position].name); // DEBUG ATTEMPT printf("%f\n", weight); // DEBUG ATTEMPT strcpy(CD[position].name, name); CD[position].gender = gender; CD[position].height = height; CD[position].weight = weight; position++; iCount++; } // end while Currently, my output is as follows:
(space where name should be) (space where CD[position].name should be) 180.25 (space where name should be) (space where CD[position].name should be) 185.3 (space where name should be) (space where CD[position].name should be) 120.3 (space where name should be) (space where CD[position].name should be) ... Thanks for any insight! I'm a C beginner, so I may be missing something silly.
name,gender,heightandweight? Are you sure you are not invoking undefined behavior by passing pointers to object having wrong type?CD[position].namein the DEBUG ATTEMPT initialized? Please post a Minimal, Complete, and Verifiable example.CD[position].namebefore thestrcpy. Also, trywhile (fscanf(filePtr, " %[^,], %[^,], %f, %f", name, gender, &height, &weight) == 4)genderis capable to store only one character, so only zero characters can be read, considering the terminating null-character.%cto read single character.