recorder.txt

https://stackoverflow.com/questions/21778571/fastest-way-to-get-data-from-a-csv-in-c


if (FILE *fp = fopen("data.csv", "r")) {
    while (fscanf(fp, "%d,%d,%d", &x, &y, &z) == 3) {
        xv.push_back(x);
        yv.push_back(y);
        zv.push_back(z);
    }
    fclose(fp);
}

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C code to create csv file in c


#include<stdio.h>

#include<string.h>

void create_marks_csv(char *filename,int a[][3],int n,int m){

printf("\n Creating %s.csv file",filename);

FILE *fp;

int i,j;

filename=strcat(filename,".csv");

fp=fopen(filename,"w+");

fprintf(fp,"Student Id, Physics, Chemistry, Maths");

for(i=0;i<m;i++){

    fprintf(fp,"\n%d",i+1);

    for(j=0;j<n;j++)

        fprintf(fp,",%d ",a[i][j]);

    }

fclose(fp);

printf("\n %sfile created",filename);

}

int main(){

    int a[3][3]={{50,50,50},{60,60,60},{70,70,70}};

    char str[100];

    printf("\n Enter the filename :");

    gets(str);

create_marks_csv(str,a,3,3);

return 0;

}
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#include<stdio.h>
 
#include<string.h>
 
void create_marks_csv(char *filename,int a[][3],int n,int m){
 
printf("\n Creating %s.csv file",filename);
 
FILE *fp;
 
int i,j;
 
filename=strcat(filename,".csv");
 
fp=fopen(filename,"w+");
 
fprintf(fp,"Student Id, Physics, Chemistry, Maths");
 
for(i=0;i<m;i++){
 
    fprintf(fp,"\n%d",i+1);
 
    for(j=0;j<n;j++)
 
        fprintf(fp,",%d ",a[i][j]);
 
    }
 
fclose(fp);
 
printf("\n %sfile created",filename);
 
}
 
int main(){
 
    int a[3][3]={{50,50,50},{60,60,60},{70,70,70}};
 
    char str[100];
 
    printf("\n Enter the filename :");
 
    gets(str);
 
create_marks_csv(str,a,3,3);
 
return 0;
 
}