14. WRITE A C PROGRAM TO COPY ONE FILE CONTENT TO ANOTHER FILE WITHOUT USING INBUILT FUNCTIONS

14. WRITE A C PROGRAM TO COPY ONE FILE CONTENT TO ANOTHER

FILE WITHOUT USING INBUILT FUNCTIONS

SOURCE CODE:

#include<stdio.h>

#include<conio.h>

void main()

{

FILE *fp1,*fp2;

char ch,fname1[20],fname2[20];

printf("\nEnter source file name :");

gets(fname1);

printf("\nEnter dest file name :");

gets(fname2);

fp1=fopen(fname1,"r");

fp2=fopen(fname2,"w");

if(fp1==NULL||fp2==NULL)

{

printf("unable to open");

exit(0);

}

do

{

ch=fgetc(fp1);

fputc(ch,fp2);

}

while(ch!=EOF);

fcloseall();

printf("\n Files copied Successfully");

getch();

}

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13. B. FIND WHETHER A GIVEN WORD EXISTS IN THE FILE. IF IT EXISTS DISPLAY THE LOCATION OF THE WORD SOURCE CODE:

13. B. FIND WHETHER A GIVEN WORD EXISTS IN THE FILE. IF IT

EXISTS DISPLAY THE LOCATION OF THE   WORD

SOURCE CODE:

#include <stdio.h>

#include <stdlib.h>

int main(){

FILE *fp;

int line_num = 1;

int find_result = 0;

char temp[512];

char str[10];

printf("Enter a String");

scanf("%s",str);

fp=fopen("g.txt","r");

while(fgets(temp, 512, fp) != NULL) {

if((strstr(temp, str)) != NULL) {

printf("A match found on line: %d\n", line_num);

printf("\n%s\n", temp);

find_result++;

}

line_num++;

}

if(find_result == 0) {

printf("\nSorry, couldn't find a match.\n");

}

if(fp) {

fclose(fp);

}

return(0);

}

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13. A. WRITE A C PROGRAM TO REMOVE ALL WHITE SPACES AND NEWLINE CHARACTERS FROM A FILE

13. A. WRITE A C PROGRAM TO REMOVE ALL WHITE SPACES AND 

NEWLINE CHARACTERS FROM A FILE

SOURCE CODE:

#include <stdio.h>

#include <stdlib.h>

int main(){

FILE *fp,*fp1;

char ch;

fp=fopen("g.txt","r");

fp1=fopen("g2.txt","w");

if(fp==NULL)  {

printf("Some problem in opening the file");

exit(0);

}

else  {

while((ch=fgetc(fp))!=EOF)  {

if(ch==' '|| ch=='\n') {

}

else  {

fprintf(fp1,"%c",ch);

}

}

}

fclose(fp);

return 0;

}

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12. DEFINE A STRUCTURE CALLED STUDENT HAVING THE PROPERTIES OF STUDENT_ID, STUDENT NAME AND BRANCH OF THE STUDENT WITH A SUB STRUCTURE OF MARKS OF 3 SUBJECTS. WRITE A MENU DRIVEN C PROGRAM TO A. ADD NEW STUDENT DETAIL B. DELETE A STUDENT DETAIL C. DISPLAY ALL STUDENT DETAILS D. DISPLAY THE AVERAGE MARKS SCORED BY THE STUDENTS SOURCE CODE:

12. DEFINE A STRUCTURE CALLED STUDENT HAVING THE

PROPERTIES  OF STUDENT_ID, STUDENT NAME AND BRANCH OF  

THE STUDENT WITH A SUB STRUCTURE OF MARKS OF 3

SUBJECTS. WRITE A MENU DRIVEN C PROGRAM TO

A. ADD NEW STUDENT DETAIL

B. DELETE A STUDENT DETAIL

C. DISPLAY ALL STUDENT DETAILS

D. DISPLAY THE AVERAGE MARKS SCORED BY THE STUDENTS

SOURCE CODE:

#include <stdio.h>

#include<math.h>

typedef struct Student {

char name[20];

char branch[20];

char id[20];

int m1,m2,m3;

float avg;

}Student;

int main(void){

char id[10];

FILE *fp,*ft;

char another,choice;

Student s;

char fname[20];

char lname[20];

long int recsize;

fp=fopen("s.DAT","rb+");

if(fp==NULL) {

fp=fopen( "s.DAT","wb+");

if(fp==NULL) {

printf("Can't Open File");

exit();

}

}

recsize=sizeof(s);

while(1) {

printf("\n1.Add Records\n2.Delete Record \n3.ListRecords\n4.Diaply Average

Marks\n5.Exit");

printf("\nEnter your choice :");

fflush(stdin);

scanf("%c",&choice);

switch(choice) {

case'1':

fseek(fp,0,SEEK_END);

printf("\nEnter the id,name branch : ");

scanf("%s %s %s",s.id,s.name,s.branch);

printf("\nEnter the marks1 marks 2, marks 3 :");

scanf("%d %d %d",&s.m1,&s.m2,&s.m3);

s.avg=(s.m1+s.m2+s.m3)/3.0;

fwrite(&s,recsize,1,fp);

break;

case '2':

printf("Enter the id of the Student to be deleted : ");

scanf("%s",&id);

ft=fopen("TEMP.DAT","wb");

rewind(fp);

while(fread(&s,recsize,1,fp)==1) {

if(strcmp(s.id,id)!=0)

fwrite(&s,recsize,1,ft);

}

fclose(fp);

fclose(ft);

remove("s.DAT");

rename("TEMP.DAT","s.DAT");

fp=fopen("s.DAT","rb+");

break;

case '3':

rewind(fp);

while(fread(&s,recsize,1,fp)==1)

printf("\n %s %s %s %d %d

%d",s.name,s.id,s.branch,s.m1,s.m2,s.m3);

break;

case '4' :

rewind(fp);

while(fread(&s,recsize,1,fp)==1)

printf("\n %s %s %s %d %d %d

%f",s.name,s.id,s.branch,s.m1,s.m2,s.m3,s.avg);

break;

case '5':

fclose(fp);

exit();

}

}

}

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11. CREATE A STRUCTURE COMPLEX NUMBER HAVING REAL AND IMAGINARY PART AS PROPERTIES. WRITE FUNCTIONS TO ADD AND SUBTRACT THE TWO COMPLEX NUMBERS.

11. CREATE A STRUCTURE COMPLEX NUMBER HAVING REAL AND

IMAGINARY PART AS PROPERTIES.

WRITE FUNCTIONS TO ADD AND SUBTRACT THE TWO COMPLEX

NUMBERS.

SOURCE CODE:

#include <stdio.h>

struct complex

{

int real, img;

};

struct complex a, b, c;

void readcom(){

printf("Enter a and b where a + ib is the first complex number.\n");

printf("a = ");

scanf("%d", &a.real);

printf("b = ");

scanf("%d", &a.img);

printf("Enter c and d where c + id is the second complex number.\n");

printf("c = ");

scanf("%d", &b.real);

printf("d = ");

scanf("%d", &b.img);

}

void addcom(){

c.real = a.real + b.real;

c.img = a.img + b.img;

if ( c.img >= 0 )

printf("Sum of two complex numbers = %d + %di\n",c.real,c.img);

else

printf("Sum of two complex numbers = %d %di\n",c.real,c.img);

}

void subcom(){

c.real = a.real - b.real;

c.img = a.img - b.img;

if ( c.img >= 0 )

printf("\nDifference of two complex numbers = %d + %di",c.real,c.img);

else

printf("\nDifference of two complex numbers = %d %di",c.real,c.img);

}

void main()

{

readcom();

addcom();

subcom();

}

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