Emulating Linux WC Command: Counting Words, Chars & Lines

[pokkie]

Homework Statement

Emulating the wc command in linuxOutput suppose to be like this :
[root@localhost home]# wc
This is a test
1 4 15
[root@localhost home]# ./wc1.exe
This is a test
1 4 15
[root@localhost home]# cat File1.dat
This is a test
[root@localhost home]# wc < File1.dat
1 4 15
[root@localhost home]# ./wc1.exe < File1.dat
1 4 15
[root@localhost home]#

Homework Equations

null

The Attempt at a Solution

#include <stdio.h>
#define MaxLine 200

char Line[MaxLine]; //one line from the file

int NChars = 0; //number of characters seen so far
int NWords = 0; //number of words seen so far
int NLines = 0; //number of lines seen so far
int LineLength; //length of the current line
int fromfile;
FILE *fp1;PrintLine() //for debugging purposes only

{

int I;

for(I=0; I < LineLength; I++) printf("%c",Line[I]);
printf("\n");
}

int WordCount() //count words{ int I,NBlanks =0;
for (I=0;I < LineLength; I++)

if (Line[I]== ' ') NBlanks++;

if(LineLength > 1) return NBlanks+1;
else return 0;
}

int ReadLine() //from user input
{ 
char C; int I;

//printf("please input something: ");
//scanf("%c",&C);

if (scanf("%c",&C) == -1) return 0;
Line[0]= C;
if (C =='\n') return 1;
for (I=1;;I++) {
scanf("%c",&C);
Line[I]=C;
if (C=='\n') return I+1;
}
}int ReadLine2() //from file{ 
char C; int I;
if (fscanf(fp1,"%c",&C) == -1) return 0;
Line[0]= C;
if (C =='\n') return 1;
for (I=1;;I++) {
scanf("%c",&C);
Line[I]=C;
if (C=='\n') return I+1;
}
}UpdateCounts()
{
NChars += LineLength;
NWords += WordCount();
NLines++;
}

main()

{
printresult();}

int printresult() {
while(1) {
LineLength = ReadLine();
if(LineLength ==0) break;
UpdateCounts();
}
printf("%7d%8d%7d\n",NLines,NWords,NChars);
if(!(fp1 = fopen("File1.DAT", "r")))
{
printf("Error opening FILE1.DAT for reading");

while((fromfile =fgetc(fp1)) !=EOF)
{
fromfile = ReadLine2();
if(fromfile ==0) break;
UpdateCounts();
}
printf("%3d%3d%3d\n",NLines,NWords,NChars);
fclose(fp1);
}
}

but my output turned out like this :

[root@localhost home]# wc
This is a test
1 4 15
[root@localhost home]# ./wc1.exe
This is a test
1 4 15
[root@localhost home]# cat File1.dat
This is a test
[root@localhost home]# wc < File1.dat
1 4 15
[root@localhost home]# ./wc1.exe <File1.dat
1 4 15
Segmentation faultHow do I get the .dat loop to run? =(

thank you.

 

[CompuChip]

Why are you trying to open File1.dat in your program anyway?
Isn't the whole idea of using the < operator that you can read the file from stdin?

 

[Mene]

Your code seems to have some syntax errors and may be causing the segmentation fault. I would suggest debugging your code and fixing any errors before trying to run it again. You can also try using a debugger tool or printing out the values of your variables at different points in the code to see where the error is occurring. Additionally, make sure you are properly closing your file after reading from it.