So I'm new to C programming and have some trouble figuring out how to file scan and input each different data into each variable. I already think file scan with fscanf, fgets or fread, but i don't know how to do it. This is the code that i already write:
File.txt content:Code:#include <stdio.h>#include <stdlib.h> #include <string.h> struct testfile { char name[20]; int number; int height; float weight; }file[100]; int main () { char buffer[100]; char choose='T'; int x,y,z; FILE *fp; fp=fopen("File.txt","r"); /* Fscanf, but fail for(x=0;x<100;x++) { fscanf(fp,"%d %[^\n] %d %f",&file[x].number,file[x].name,&file[x].height,&file[x].weight); printf("%d %s %d %f\n",file[x].number,file[x].name,file[x].height,file[x].weight); }*/ /* fgets, same fail too while(!feof(fp)) { fgets(buffer,sizeof buffer,fp); sscanf(buffer,"%d",&file[x].number); fgets(buffer,sizeof buffer,fp); sscanf(buffer,"%[^\n]",file[x].name); fgets(buffer,sizeof buffer,fp); sscanf(buffer,"%d",&file[x].height); fgets(buffer,sizeof buffer,fp); sscanf(buffer,"%f",&file[x].weight); printf("%d %s %d %f\n",file[x].number,file[x].name,file[x].name,file[x].height,file[x].weight); x++; } */ /*After the file is success scanned and save into each variable, the user can choose what number from the data and retrieve the following data on that number while (choose !='Y') { printf("Choose Data: "); scanf("%d",&file[x].number); printf("Data number : %d\nName : %s\nHeight : %d\nWeight : %.2f\n",file[x].number,file[x].name,file[x].name,file[x].height,file[x].weight); x++; printf("Get Another Data? (Y/N) : "); scanf("%c",&choose); }*/ fclose(fp); return 0; }
This is the attempt using fscanf (not mixed with fgets)Code:No Name Height (CM) Weight (KG) 1 Josh Broclin 175 83 2 Ryan Andreas 184 98 3 Tom Norton 162 111.6 4 Harry Syd 190 68 5 Hayu Beurang 181 75 6 Jeff Rick 169 108 7 Asley Thomas 179 104
And this is the output:Code:#include <stdio.h>#include <stdlib.h> #include <string.h> struct testfile { char name[20]; int number; int height; float weight; }file[100]; int main () { char buffer[100]; char choose='T'; int x,y,z; FILE *fp; fp=fopen("File.txt","r"); //Fscanf, but fail for(x=0;x<10;x++) { fscanf(fp,"%d %[^\n] %d %f",&file[x].number,file[x].name,&file[x].height,&file[x].weight); printf("%d %s %d %f\n",file[x].number,file[x].name,file[x].name,file[x].height,file[x].weight); } fclose(fp); return 0; }
This one is using fgets (not mixed with fscanf)Code:0 0 0.0000000 0 0.000000 0 0 0.000000 0 0 0.000000 0 0 0.000000 0 0 0.000000 0 0 0.000000 0 0 0.000000 0 0 0.000000 0 0 0.000000 Process returned 0 (0x0) execution time : 0.020 s Press any key to continue.
The output for fgets:Code:#include <stdio.h>#include <stdlib.h> #include <string.h> struct testfile { char name[20]; int number; int height; float weight; }file[100]; int main () { char buffer[100]; char choose='T'; int x,y,z; FILE *fp; fp=fopen("File.txt","r"); while(!feof(fp)) { fgets(buffer,sizeof buffer,fp); sscanf(buffer,"%d",&file[x].number); fgets(buffer,sizeof buffer,fp); sscanf(buffer,"%[^\n]",&file[x].name); fgets(buffer,sizeof buffer,fp); sscanf(buffer,"%d",&file[x].height); fgets(buffer,sizeof buffer,fp); sscanf(buffer,"%f",&file[x].weight); printf("%d %s %d %f\n",file[x].number,file[x].name,file[x].name,file[x].height,file[x].weight); x++; } fclose(fp); return 0; }
Both method that i currently using give a wrong output.Code:``` 538976309 1 Josh Broclin 175 ☻ 4225408 0.000000 153100320 5 Hayu Beurang ♠ 4225440 0.000000 Process returned 0 (0x0) execution time : 0.105 s Press any key to continue.
After the file is scanned, it can retrieve data information depend on what number the user choose, for example:
Code:Choose Data: 3 Data number :3 Name : Tom Norton Height : 162 Weight : 111.6 Get Another Data? (Y/N) :
So how to solve this? I've been thinking about this problem and its solution, but can't find the solution. It really disturbs me whenever I want to sleep this problem comes again and figure out how to solve it. Thank you.
