Short C program that takes in a runtime defined CSV file and outputs a 1D const array version as a single line. Useful for generating look up tables from CSVs essentially.

csv2cArrayDef.c

#include <stdio.h>
#include <stdlib.h>

int main() {
    char c, inFileName[100], outFileName[100], type[20], arrayName[50];
    FILE *fin, *fout;
    int position;

    printf("CSV to 1D lookup table suitable for use in C/C++ v0.1\n");
    printf("Prints out to a file as a single line even if CSV is multiline\n\n");

    printf("Enter the name of the csv you want to use (don't worry about .csv)\n");
    printf("NOTE: csv is assumed to be all data no gaps\n");
    gets(inFileName);

    strcat(inFileName, ".csv");

    fin = fopen(inFileName,"r"); // Read Only

    if(fin == NULL) {
        perror("Error while opening the file:\n");
        exit(EXIT_FAILURE);
    }

    printf("Enter full output file name (including extension). WARNING will overwrite.\n");
    gets(outFileName);

    fout = fopen(outFileName,"w+"); // Write Only

    if(fout == NULL) {
        perror("Error while opening the file:\n");
        exit(EXIT_FAILURE);
    }

    printf("Enter array type: int,double,float etc\n");
    gets(type);

    printf("Enter desired array name\n");
    gets(arrayName);

    printf("Construction in progress..");

    fprintf(fout,"const %s %s%s",type,arrayName, "[] = {");
    while((c = fgetc(fin)) != EOF) {
        if(c == '\n') {
            fprintf(fout,"%s",",");
        } else {
            fprintf(fout,"%c",c);
        }
    }

    position = ftell(fout) - 1; // Go back one entry to remove traielr comma
    fseek(fout,position,SEEK_SET);
    fprintf(fout,"%s","};");

    fclose(fin);
    fclose(fout);

    printf("Construction Complete\n");
    system("PAUSE");
    return EXIT_SUCCESS;
}