Simulation of Unix Commands - wc

SIMULATION OF UNIX COMMANDS - Word Count (wc)

Programs

// 4. wc command

#include<stdio.h>

int wc,lc,cc;

main(int argc, char * argv[] )

{

FILE *fp;

int i;

char a[100];

if(argc!=2)

{

          printf(“Usage error”);

          return;

}

fp = fopen(argv[1],"r");

if(fp==NULL)

{

          printf("File opening error");

          return;

}

i=load(fp,a);

while(i==1)

{

          count(a);

          i=load(fp,a);

}

printf("\nWord Count : %d", wc);

printf("\nLine Count : %d", lc);

printf("\nCharacter Count : %d", cc);

close(fp);

}

load(fp1,g)

FILE *fp1;

char g[];

{

          int n;

         

          for(n=0;(g[n]=getc(fp1))!=EOF;n++)

                   if(g[n]=='\n')

                   {

                             g[n]='\0';

                             return 1;

                   }

          return 0;

}

count(g)

char g[];

{

          int n;

          for(n=0;g[n]!='\0';n++)

          {

                   lc++;

                   if(g[n]!='\t' && g[n]!=' ' )

                             cc++;

                   if( (g[n]=='\t' && g[n+1]!='\t' )||(g[n]==' ' && g[n+1]!=' ' ) )

                             wc++;

          }

}