1. INC 161 , CPE 100 Computer Programming
Lab 9

3. Open your notepad (or other text editor).
Write the following and save.
3,2,5
1,7,13
Rename the extension to .csv
Open with excel.
Open with notepad.

4. Comma-Separated Values (CSV)
A text file that has its values as numbers or strings, separated by commas and new lines. 3 2 5 1 7 13
Note: This is not excel workbook format.

5. Example 1 (Write file) w = write File handle Open file Write
#include <stdio.h>
main() {
FILE *fp;
fp = fopen(“file.txt”, “w”);
fprintf(fp,“Hello”);
fclose(fp); }
File handle
Open file
Write
Close file

6. Example 1 (Write file) File handle Open file Write Close file
#include <stdio.h>
main() {
FILE *fp;
fp = fopen(“file.csv”, “w”);
fprintf(fp,“3,2,5\n”);
fprintf(fp,“1,7,13\n”);
fclose(fp); }
File handle
Open file
Write
Close file

7. Example 2 (Read file) #include <stdio.h> main() { int a,b,c;
FILE *fp;
fp = fopen(“file.csv”, “r”);
fscanf(fp,“%d,%d,%d”,&a,&b,&c);
fclose(fp); }

8. Example 3 (Read file) Check out the return from scanf
#include <stdio.h>
main() {
int a,b,c,d;
FILE *fp;
fp = fopen(“file.csv”, “r”);
d = fscanf(fp,“%d,%d,%d”,&a,&b,&c);
fclose(fp); }
Check out the return from scanf

9. Data Science Investigate the Pokemon database. # Name Type 1 Type 2
Total HP
Attack
Defense
Sp. Atk
Sp. Def
Speed
Generation
Legendary 1
Bulbasaur
Grass
Poison
318 45 49 65
FALSE 2
Ivysaur
405 60 62 63 80 3
Venusaur
525 82 83
100
VenusaurMega Venusaur
625
123
122
120 4
Charmander
Fire
309 39 52 43 50 5
Charmeleon 58 64 6
Charizard
Flying
534 78 84
109 85

10. Task 1 Print all the pokemon’s name on the screen. Read header once.
Use loop for each subsequence lines.
Instead of using %s for string
Use %[^\n,]

11. Task 2
Write a program to print the pokemon’s name that has the highest
HP. (for Student ID 01-10)
Attack (for Student ID 11-20)
Defense (for Student ID 21-30)
Total (for Student ID 31-)
Hint: Use find minimum in lecture 6 (array)