TOKEN SEPARATION
#include<stdio.h>
#include<conio.h>
#include<stdlib.h>
#include<string.h>
#include<ctype.h>
FILE *fp;
char
kw[25][10]={"include","int","void","float","char","if","else","while","switch"};
char optr[15]={'+','-','*','/','%','='};
char sym[20]={'{','}','[',']','.',',','"','<','>',':',';'};
char
dt[5][8]={"int","float","char"};
char
fname[10],c[10],x,y; int i;
void main()
{
int ch,op;
void display(); void operators();
void constants(); void
specialsymbols(); clrscr();
printf("\nToken Separation:\n");
printf("-----------------\n\n");
printf("Menus:\n\n1.Display
Program\n2.Display Keywords\n3.Display Variables\n4.Display
Operators\n5.Display Constants\n6.Display Special Symbols\n7.Quit\n\n");
label:
printf("Enter your choice:
");
scanf("%d",&ch);
switch(ch)
{
case 1:
display(); break;
case 2:
printf("\nEnter the file name with extension : ");
scanf("%s",fname);
fp=fopen(fname,"r");
if(fp==NULL)
printf("ERROR...");
else
{
do
{
fscanf(fp,"%s",&c);
for(i=0;i<9;i++)
{
if(strcmp(c,kw[i])==0) printf("%s ",c);
}
}while(!feof(fp));
}
fclose(fp);
break;
case 3:
printf("\nEnter the file name with extension : ");
scanf("%s",fname);
fp=fopen(fname,"r");
if(fp==NULL)
printf("ERROR...");
else
{
do
{
fscanf(fp,"%s",&c);
for(i=0;i<3;i++)
{
if(strcmp(c,dt[i])==0)
{
while((x=fgetc(fp))!=';')
printf("%c",x);
break;
}
}
}while(!feof(fp));
}
fclose(fp);
break;
case 4:
operators(); break;
case 5:
constants(); break;
case 6:
specialsymbols(); break;
case 7:
exit(0); break;
default:
printf("Invalid Option...Try Again...\n"); break;
}
printf("\nDo you want to
continue (1/0): ");
scanf("%d",&op);
if(op==1)
goto label;
else
exit(0);
getch();
}
void display()
{
printf("\nEnter the file name
with extension : ");
scanf("%s",fname);
fp=fopen(fname,"r");
if(fp==NULL) printf("ERROR...");
else
{
fscanf(fp,"%c",&y);
while(!feof(fp))
{
printf("%c",y); fscanf(fp,"%c",&y);
}
}
fclose(fp);
}
void operators()
{
printf("\nEnter the file name
with extension : ");
scanf("%s",fname);
fp=fopen(fname,"r");
if(fp==NULL) printf("ERROR...");
else
{
while(fread(&y,sizeof(char),1,fp))
{
for(i=0;i<6;i++)
if(y==optr[i])
printf("%c,",y);
}
}
fclose(fp);
}
void constants()
{
printf("\nEnter the file name
with extension : ");
scanf("%s",fname);
fp=fopen(fname,"r");
if(fp==NULL) printf("ERROR...");
else
{
while(fread(&y,sizeof(char),1,fp))
{
if(isdigit(y))
printf("%c,",y);
}
}
fclose(fp);
}
void specialsymbols()
{
printf("\nEnter the file name with
extension : ");
scanf("%s",fname);
fp=fopen(fname,"r");
if(fp==NULL) printf("ERROR...");
else
{
while(fread(&y,sizeof(char),1,fp))
{
for(i=0;i<11;i++)
if(y==sym[i])
printf("%c,",y);
}
}
fclose(fp);
}
OUTPUT:
Token Separation:
-----------------------
Menus:
1.Display Program
2.Display Keywords
3.Display Variables
4.Display Operators
5.Display Constants
6.Display Special Symbols
7.Quit
Enter your choice: 1
Enter the file name with extension : add.c
//Addition
#include<stdio.h>
#include<conio.h>
void main()
{
int c; float
x,y; char s[10],a;
clrscr();
c=123+456;
printf("Added value is...%d",c);
getch();
}
Do you want to continue (1/0): 1
Enter your choice: 2
Enter the file name with extension : add.c
void int float
char
Do you want to continue (1/0): 1
Enter your choice: 3
Enter the file name with extension : add.c
c x,y s[10],a
Do you want to continue (1/0): 1
Enter your choice: 4
Enter the file name with extension : add.c
/,/,=,+,%,
Do you want to continue (1/0): 1
Enter your choice: 5
Enter the file name with extension : add.c
1,0,1,2,3,4,5,6,
Do you want to continue (1/0): 1
Enter your choice: 6
Enter the file name with extension : add.c
<,.,>,<,.,>,{,;,,,;,[,],,,;,;,;,",.,.,.,",,,;,;,},
Do you want to continue (1/0): 1
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