pls merge. thenks

COHENSUTHERLAND_LINECLIPPING_ALGO.CPP

@@ -4,6 +4,7 @@
 #include<graphics.h>
 #include<process.h>
 #include<dos.h>
+
 void main()
 {
 	int gd=DETECT,gm;
@@ -144,11 +145,3 @@ void main()
 	closegraph();
 	getch();
 }
-
-
-
-
-
-
-
-

Compiler_Design/lex_programs/abc.l

@@ -0,0 +1,16 @@
+%option noyywrap
+%{
+#include<string.h>
+%}
+
+%%
+abc {strcpy(yytext, "ABC"); ECHO;}
+. ECHO;
+%%
+
+int main(){
+	yyin = fopen("abc.txt", "r");
+	yyout = fopen("resul_abc.txt", "w");
+	yylex();
+	return 0;
+}

Compiler_Design/lex_programs/abc.txt

@@ -0,0 +1,3 @@
+sdjkagkdfjahsd abc
+\abc
+abc

Compiler_Design/lex_programs/vc.l

@@ -0,0 +1,16 @@
+%option noyywrap
+%{
+	int vowels=0, consonants=0;
+%}
+
+%%
+[aeiouAEIOU] vowels++;
+[a-zA-Z] consonants++;
+%%
+
+int main(){
+	yylex();
+	printf("\n\nvowels=%d \nconsonants=%d\n", vowels, consonants);
+	return 0;
+}
+

Compiler_Design/lex_programs/wcl.l

@@ -0,0 +1,17 @@
+%option noyywrap
+%{
+	int words=0, chars=0, lines=0;
+%}
+
+%%
+[a-zA-Z]+ {words++; chars+=yyleng;}
+\n {chars++; lines++;}
+. chars++;
+%%
+
+
+int main(){
+	yylex();
+	printf("\n\nwords=%d \ncharacters= %d \nlines= %d \n", words, chars, lines);	
+	return 0;
+}

Compiler_Design/yacc_programs/iden.l

@@ -0,0 +1,12 @@
+%option noyywrap
+%{
+#include "iden.tab.h"
+%}
+
+%%
+[0-9] { return DIGIT;}
+[_a-zA-Z] {return LETTER;}
+\n  {return NL;}
+.   {return yytext[0];}
+%%
+

Compiler_Design/yacc_programs/iden.y

@@ -0,0 +1,25 @@
+%{
+#include<stdio.h>
+#include<stdlib.h>
+%}
+
+%token NL DIGIT LETTER
+
+%%
+stmt: variable NL {printf("Valid Identifier\n"); return 0;}
+variable: LETTER alphanumeric
+alphanumeric: LETTER alphanumeric | DIGIT alphanumeric | LETTER | DIGIT
+
+%%
+int main()
+{
+    printf("Enter an Identifier\n");
+    yyparse();
+    return 0;
+}
+int yyerror()
+{
+  printf("Invalid Identifier!\n");
+  exit(0);
+}
+

Description.c

@@ -1,13 +1,13 @@
-#include<stdio.h>
-#include<conio.h>
-void main()
-{
-  printf("WELCOME TO HACKTOBERFEST 2020!!!!!");
-  printf("So let's get started!");
-  printf("I guess everybody is a noobie here");
-  printf("My whole life was a bruh moment");
-  printf("\n What is life, anyway?");
-  printf("Hello there,this id Anushree VInod");
-  printf("My whole life was just great");
-  printf("With a little sunshine, we can make it through");
+#include <stdio.h>
+#include <conio.h>
+
+void main() {
+    printf("WELCOME TO HACKTOBERFEST 2020!!!!!");
+    printf("So let's get started!");
+    printf("I guess everybody is a noobie here");
+    printf("My whole life was a bruh moment");
+    printf("\n What is life, anyway?");
+    printf("Hello there,this id Anushree VInod");
+    printf("My whole life was just great");
+    printf("With a little sunshine, we can make it through");
 }

Factorial.c

@@ -0,0 +1,19 @@
+#include <stdio.h>
+int main() {
+    int n, i;
+    unsigned long long fact = 1;
+    printf("Enter an integer: ");
+    scanf("%d", &n);
+
+    // shows error if the user enters a negative integer
+    if (n < 0)
+        printf("Error! Factorial of a negative number doesn't exist.");
+    else {
+        for (i = 1; i <= n; ++i) {
+            fact *= i;
+        }
+        printf("Factorial of %d = %llu", n, fact);
+    }
+
+    return 0;
+}

Fibonacci.c

@@ -0,0 +1,28 @@
+#include <stdio.h>
+int main() {
+
+  int i, n;
+
+  // initialize first and second terms
+  int t1 = 0, t2 = 1;
+
+  // initialize the next term (3rd term)
+  int nextTerm = t1 + t2;
+
+  // get no. of terms from user
+  printf("Enter the number of terms: ");
+  scanf("%d", &n);
+
+  // print the first two terms t1 and t2
+  printf("Fibonacci Series: %d, %d, ", t1, t2);
+
+  // print 3rd to nth terms
+  for (i = 3; i <= n; ++i) {
+    printf("%d, ", nextTerm);
+    t1 = t2;
+    t2 = nextTerm;
+    nextTerm = t1 + t2;
+  }
+
+  return 0;
+}

Leapyear.c

@@ -0,0 +1,27 @@
+#include <stdio.h>
+int main() {
+   int year;
+   printf("Enter a year: ");
+   scanf("%d", &year);
+
+   // leap year if perfectly divisible by 400
+   if (year % 400 == 0) {
+      printf("%d is a leap year.", year);
+   }
+   // not a leap year if divisible by 100
+   // but not divisible by 400
+   else if (year % 100 == 0) {
+      printf("%d is not a leap year.", year);
+   }
+   // leap year if not divisible by 100
+   // but divisible by 4
+   else if (year % 4 == 0) {
+      printf("%d is a leap year.", year);
+   }
+   // all other years are not leap years
+   else {
+      printf("%d is not a leap year.", year);
+   }
+
+   return 0;
+}

Primenumber.c

@@ -0,0 +1,31 @@
+#include <stdio.h>
+
+int main() {
+
+  int n, i, flag = 0;
+  printf("Enter a positive integer: ");
+  scanf("%d", &n);
+
+  // 0 and 1 are not prime numbers
+  // change flag to 1 for non-prime number
+  if (n == 0 || n == 1)
+    flag = 1;
+
+  for (i = 2; i <= n / 2; ++i) {
+
+    // if n is divisible by i, then n is not prime
+    // change flag to 1 for non-prime number
+    if (n % i == 0) {
+      flag = 1;
+      break;
+    }
+  }
+
+  // flag is 0 for prime numbers
+  if (flag == 0)
+    printf("%d is a prime number.", n);
+  else
+    printf("%d is not a prime number.", n);
+
+  return 0;
+}

SCAN Disk Scheduling.c

@@ -1,7 +1,6 @@
 #include<stdio.h>
 #include<stdlib.h>
 
-
 void main(){
     int req_sq[10],i,j,n,head,seek_count=0,distance,rl[10],rg[10],irl=-1,irg=-1,temp;
     float avg;
@@ -18,30 +17,30 @@ void main(){
     for(i=0;i<n;i++){
         if(req_sq[i]<=head){
             rl[++irl]=req_sq[i];
-            
+
         }
         else{
-            rg[++irg]=req_sq[i];
-        }
+                rg[++irg]=req_sq[i];
+            }
     }
     for(i=0;i<irl;i++){
         for(j=i+1;j<irl+1;j++){
-                if(rl[j]>rl[i]){
-                    temp=rl[i];
-                    rl[i]=rl[j];
-                    rl[j]=temp;
-                }
-            
+            if(rl[j]>rl[i]){
+                temp=rl[i];
+                rl[i]=rl[j];
+                rl[j]=temp;
+            }
+
         }
     }
     for(i=0;i<irg;i++){
         for(j=i+1;j<irg+1;j++){
-                if(rg[j]<rg[i]){
-                    temp=rg[i];
-                    rg[i]=rg[j];
-                    rg[j]=temp;
-                }
-            
+            if(rg[j]<rg[i]){
+                temp=rg[i];
+                rg[i]=rg[j];
+                rg[j]=temp;
+            }
+
         }
     }
     for(i=0;i<=irl;i++){
@@ -56,7 +55,7 @@ void main(){
         seek_count+=distance;
         head=rg[i];
     }
-    avg=seek_count/n;
+    avg = seek_count/n;
     printf("\n\n  ============================================================\n\n");
     printf("  TOTAL SEEK TIME : %d",seek_count);
     printf("\n  AVERAGE SEEK TIME : %for",avg);

Two Pass_Asemble_Pass_2.c

@@ -0,0 +1,81 @@
+#include<stdio.h>
+#include<conio.h>
+#include<string.h>
+#include<ctype.h>
+#include<stdlib.h>
+int main()
+{
+FILE *fint,*ftab,*flen,*fsym,*fobj;
+int op1[10],txtlen,txtlen1,i,j=0,len;
+char add[5],symadd[5],op[5],start[10],temp[30],line[20],label[20],mne[10],operand[10],symtab[10],opmne[10];
+fint=fopen("intermediate.txt","r");
+flen=fopen("length.txt","r");
+ftab=fopen("optab.txt","r");
+fsym=fopen("symtab.txt","r");
+fobj=fopen("object_program.txt","w");
+fscanf(fint,"%s%s%s%s",add,label,mne,operand);
+if(strcmp(mne,"START")==0)
+{
+strcpy(start,operand);
+fscanf(flen,"%x",&len);
+}
+printf("H^%s^%s^%x\nT^00%s^15^",label,start,len,start);
+fprintf(fobj,"H^%s^%s^%x\nT^00%s^15^",label,start,len,start);
+fscanf(fint,"%s%s%s%s",add,label,mne,operand);
+while(strcmp(mne,"END")!=0)
+{
+fscanf(ftab,"%s%s",opmne,op);
+while(!feof(ftab))
+{
+if(strcmp(mne,opmne)==0)
+{
+fclose(ftab);
+fscanf(fsym,"%s%s",symadd,symtab);
+while(!feof(fsym))
+{
+if(strcmp(operand,symtab)==0)
+{
+printf("%s%s^",op,symadd);
+fprintf(fobj,"%s%s^",op,symadd);
+break;
+}
+else
+fscanf(fsym,"%s%s",symadd,symtab);
+}
+break;
+}
+else
+fscanf(ftab,"%s%s",opmne,op);
+}
+if((strcmp(mne,"BYTE")==0)||(strcmp(mne,"WORD")==0))
+{
+if(strcmp(mne,"WORD")==0)
+{
+    printf("00000%s^",operand);
+    fprintf(fobj,"00000%s^",operand);
+}
+else
+{
+len=strlen(operand);
+for(i=2;i<len;i++)
+{
+printf("%x",operand[i]);
+fprintf(fobj,"%x",operand[i]);
+}
+printf("^");
+fprintf(fobj,"^");
+}
+}
+fscanf(fint,"%s%s%s%s",add,label,mne,operand);
+ftab=fopen("optab.txt","r");
+fseek(ftab,SEEK_SET,0);
+}
+printf("\nE^00%s",start);
+fprintf(fobj,"\nE^00%s",start);
+fclose(fint);
+fclose(ftab);
+fclose(fsym);
+fclose(flen);
+getch();
+return 0;
+}