File IO (AsciiToBinary / BinaryToAscii)

AsciiToBinary

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

int main(int argc,char *argv[])
{
    FILE *ascFile = NULL;
    FILE *binFile = NULL;
    double fnum;
    char Buffer[50];
    char msg[40];
    int inum;
    int i;

    ascFile = fopen(argv[1],"r");
    if( ascFile == NULL)
    {
        printf("ascFile is null! \n");
        exit(1);
    }
    
    binFile = fopen(argv[2],"wb");
    if( binFile == NULL)
    {
        printf("binFile is null! \n");
        exit(1);
    }

    for( i = 0; i< 10; i++)
    {
        fgets(Buffer,50,ascFile);
        sscanf(Buffer,"%lf",&fnum);
        fwrite(&fnum,sizeof(double),1,binFile);
    }

    for( i = 0; i< 10; i++)
    {
        fgets(msg,40,ascFile);
        fwrite(msg,sizeof(char),40,binFile);    
    }


    for( i = 0; i< 10; i++)
    {
        fgets(Buffer,50, ascFile);
        sscanf(Buffer,"%d",&inum);
        fwrite(&inum,sizeof(int),1,binFile);
    }

    fclose(ascFile);
    fclose(binFile);

    return 0;
}

BinaryToAscii

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

int main(int argc, char* argv[])
{
    FILE *binFile = NULL;
    FILE *ascFile = NULL;
    int inum; double fnum; int i;
    char Buffer[40];

    binFile = fopen(argv[1],"rb");
    if(binFile == NULL)
    {
        printf("binFile is NULL!\n");
        exit(1);
    }

    ascFile = fopen(argv[2],"w");
    if(ascFile == NULL)
    {
        printf("ascFile is NULL!\n");
        exit(1);
    }

    
    for (i = 0; i < 10; i++)
    {
        fread(&fnum,sizeof(double),1,binFile);    
        fprintf(ascFile,"%.4f\n",fnum);
    }
        

    for(i = 0; i< 10;i++)
    {
        fread(Buffer,sizeof(char),40,binFile);
        fprintf(ascFile,"%s",Buffer);
    }


    for(i = 0; i< 10; i++)
    {
        fread(&inum,sizeof(int),1,binFile);
        fprintf(ascFile,"%d\n",inum);
    }
    
    fclose(ascFile);
    fclose(binFile);

    return 0;
}