Storing .txt file into structures - c

Question

I'm trying to store the .txt file into struct, not being successful.
I dont need the first line stored, but I do need the rest.
Thanks guys !! =)
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <math.h>
int main(int argc, const char * argv[]) {
// insert code here...
printf("Hello, World!\n");
struct candidates
{
char name[25];
char gender[5];
int height;
int weight;
};
struct candidates values[25];
FILE *fp;
if ((fp=fopen("candidatesdata.txt","r"))==NULL){printf("Unable to open file\n");}
int x = 0;
int iterations = 0;
while((fscanf(fp,"%s,%s,%d,%d",&values[x].name, &values[x].gender, &values[x].height, &values[x].weight))!=EOF)
{
x++;
iterations +=1;
}
fclose(fp);
//values[15].weight = 300;
printf("\n%d\t%d",iterations,values[1].height);
return 0;
}
Text file looks like the following:
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

Answer 1

struct candidates
{
char name[25];
char gender[5]; // can be char gender too !!
int height; // should be changed to float height
int weight; // should be changed to float height
};
If you actually have :
Name,Gender,Height,Weight
in your file, you might do his before you go to the while loop :
char somebigstring[100];
.
.
.
if(fscanf(fp,"%s",somebigstring) == EOF) //wasting the first line
exit(-1); // exiting here if there is no first line

Answer 2

fix like this:
#include <stdio.h>
#include <stdlib.h>
struct candidates{
char name[25];
char gender[7];//Female+1
float height;
float weight;
};
int main(void) {
struct candidates values[25];
FILE *fp;
if ((fp=fopen("candidatesdata.txt","r"))==NULL){
fprintf(stderr, "Unable to open file\n");
exit(EXIT_FAILURE);
}
char line[64];
int x = 0;
int iterations = 0;
while(fgets(line, sizeof line, fp)){
iterations += 1;
if(x < 25 && sscanf(line, "%24[^,],%6[^,],%f,%f", values[x].name, values[x].gender, &values[x].height, &values[x].weight)==4){
x++;
} else if(iterations != 1){
fprintf(stderr, "invalid data in %d line: %s", iterations, line);
}
}
fclose(fp);
for(int i = 0; i < x; ++i){
printf("%s,%c,%.2f,%.2f\n", values[i].name, *values[i].gender, values[i].height, values[i].weight);
}
return 0;
}

Answer 3

This code does two following things; first is writes data into .txt file and the second it reads data from .txt file and stores in struct data type which is what you are trying achieve but only for single entity. Next you should implement this as for entities.
#include<stdio.h>
#include<stdlib.h>
typedef struct{
char name[30];
//other fields
}Candidate;
typedef struct{
Candidate c;
char city[30];
int vote;
}CityVotes;
//for .bin operations
void write_to_file(FILE *f)
{
Candidate c;
CityVotes cv;
printf("Enter candidate name : ");
scanf("%s",&c.name);
cv.c = c;
printf("Enter the city : ");
scanf("%s",&cv.city);
printf("Enter the vote : ");
scanf("%d",&cv.vote);
fwrite(&cv, sizeof(cv), 1, f);
}
//for .txt operations
void write_to_file1(FILE *f)
{
Candidate c;
CityVotes cv;
printf("Enter candidate name : ");
scanf("%s",c.name);
cv.c = c;
printf("Enter the city : ");
scanf("%s",&cv.city);
printf("Enter the vote : ");
scanf("%d",&cv.vote);
fprintf(f,"%s ", cv.c.name);
fprintf(f,"%s ", cv.city);
fprintf(f,"%d ", cv.vote);
}
//for .bin operations
void read_file(FILE *f)
{
CityVotes cv;
while(fread(&cv, sizeof(cv), 1, f)){
printf("Candidate : %s\t",cv.c.name);
printf("City.: %s\t",cv.city);
printf("Vote.: %d\n",cv.vote);
}
}
//for .txt operations
void read_file1(FILE *f){
CityVotes cv;
fscanf(f," %s", &cv.c.name);
fscanf(f," %s", &cv.city);
fscanf(f," %d", &cv.vote);
printf("Candidate : %s\t",cv.c.name);
printf("City.: %s\t",cv.city);
printf("Vote.: %d\n",cv.vote);
}
int main(void)
{
FILE *f;
f=fopen("candidates.txt","w");
write_to_file1(f);
fclose(f);
f=fopen("candidates.txt","r");
read_file1(f);
return 0;
}
Be aware, the code just is example , you should check for nulls.