4(a) ADDITION OF TWO NUMBERS. Program:

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1 4(a) ADDITION OF TWO NUMBERS int a,b,c: printf( enter the elements a and b ); scanf( %d%d,&a,&b); c=a+b; printf( sum of the elements is%d,c); Output: Enter the elements a and b: 4 5 Sum of the elements is 9

2 4(b) SWAPING OF TWO NUMBERS BY USING THIRD VARIABLE Program #include< stdio.h> #include< conio.h> int i,j; printf("enter the i & j value=\n "); scanf("%d%d",&i,&j); printf( before swap ); Printf( \n%d\n%d\n,i,j); printf( after swap ); i=i+j; j=i-j; i=i-j; Printf( \n%d\n%d\n,i,j); Output Enter the i & j value=3 4 before swap i=3 j=4 after swap i=4 j=3

3 4(c) TEMPERATURE CONVERSION Program #include <stdio.h> float celc, faren; printf("enter temperature in celsius "); scanf("%f",&celc); faren= (1.8 * celc) +32; printf("\n Temperature in Farenheit = %f", faren); Output Enter temperature in Celsius : 20 Temperature in Fahrenheit = 68.0

4 4(d) QUADRATIC FORM #include <stdio.h> #include <conio.h> #include <math.h> int a, b, c, d; float r1, r2; printf("enter co-efficient for x^2 : "); scanf("%d", &a); printf("enter co-efficient for x : "); scanf("%d", &b); printf("enter const co-efficient : "); scanf("%d", &c); d = b*b - 4*a*c; r1 = (-b + sqrt(d)) / (2.0 * a); r2 = (-b - sqrt(d)) / (2.0 * a); printf("real roots are %.2f and %.2f", r1, r2); Output: Enter co-efficient for x^2 : 2 Enter co-efficient for x : 8 Enter const co-efficient : 6 Real roots are and -3.00

5 4(e) FINDING THE AREA, CIRCUMFERENCE OF CIRCLE #include <stdio.h> #include <conio.h> #define pi 3.14 main() int radius; float area, circum; printf("enter radius of the circle : "); scanf("%d", &radius); area = pi * radius * radius; circum = 2 * pi * radius; printf("area is %.2f and circumference is %.2f",area,circum); Output: Enter radius of the circle : 8 Area is and circumference is 50.24

6 4(f) LEAP YEAR OR NOT int year; printf("enter the year\n"); scanf("%d",&year); if(year%4==0&&year%100!=0 year%400==0) printf("it is leap year"); else printf("it is not a leap year"); OUTPUT: Enter the year : 2013 It is not a leap year

7 4(g) ODD OR EVEN Program int num; printf("enter the number..."); scanf("%d",&num); if(num%2==0) printf("the given number is a Even number"); else printf("the given number is a Odd number"); Output Enter the number 5 The given number is a Odd number

8 4(h) GREATEST OF TWO NUMBERS BY USING TERNARY #include <stdio.h> #include <conio.h> int x,y,big; printf("enter the value of x,y : "); scanf("%d%d", &x &y); big=(x>y)?x:y; printf("big is.%d,big); Output: Enter the value of x,y: 5 7 Big is..7

9 5(a) GREATEST OF TWO NUMBERS BY USING IF STATEMENT int a,b; printf("enter the value of a and b\n"); scanf("%d%d",&a,&b); if(a>b) printf("%d is big",a); else printf("%d is big",b); Output: enter the value of a and b is big

10 5(b) GREATEST AMONG THREE NUMBERS USING NESTED IF STATEMENT int a,b,c; printf("enter the value of a,b,c \n"); scanf("%d%d%d",&a,&b,&c); if(a>b) if(a>c) printf("max=a"); else printf("max=c"); else if(b>c) printf("max=b"); else printf("max=c"); OUTPUT: enter the value of a,b,c max=a

11 5(C) CALCULATOR USING SWITCH CASE int a,b,c,n; printf("enter values for 'a'and 'b'\n"); scanf("%d%d",&a,&b); printf("enter the choice \n"); scanf("%d",&n); switch(n) case 1: c=a+b; printf("the value of c is %d",c); break; case 2: c=a-b; printf("the value of c is %d",c); break; case 3: c=a*b; printf("the value of c is %d",c); break; case 4: c=a/b; printf("the value of c is %d",c); break; default: printf("wrong choice!!"); OUTPUT: enter values for 'a'and 'b' 5 9 enter the choice 3 the value of c is 45

12 5(d) FIND THE SUM OF DIGITS Program int n,r,s=0; printf("enter no:"); scanf("%d",&n); while(n>0) r=n%10; s=s+r; n=n/10; printf("\nsum of digits = %d",s); OUTPUT: Enter no: 3425 Sum of digits=14

13 5(e) FINDING WHETHER A GIVEN NUMBER IS ARMSTRONG OR NOT int a,n,sum=0,c; printf("enter the number \n"); scanf("%d",&n); a=n; while(n>0) c=n%10; c=c*c*c; sum=sum+c; n=n/10; if(sum==a) printf("%d is armstrong number",sum); else printf("%d is not an armstrong number",sum); OUTPUT: enter the number is armstrong number

14 5(f) FINDING PALINDROME OR NOT int n,temp,a,rev=0; printf("enter the number\n"); scanf("%d",&n); temp=n; while(n>0) a=n%10; rev=rev*10; rev=rev+a; n=n/10; if (temp==rev) printf("it is palindrome"); else printf("it is not palindrome"); OUTPUT: enter the number 121 it is palindrome

15 5(g) PRIME NUMBER int i,n,flg=0; printf("enter the number\n"); scanf("%d",&n); for(i=2;i<=n;i++) if (n%i==0) flg=1; break(); if (flg==0) printf( the given number is prime ); else printf( the given number is not prime ); Output: Enter the number: 7 The given number is prime.

16 5(h) FIBONACCI SERIES Program int n, first = 0, second = 1, next, c; printf("enter the number of terms\n"); scanf("%d",&n); printf("first %d terms of Fibonacci series are :-\n",n); for ( c = 0 ; c < n ; c++ ) if ( c <= 1 ) next = c; else next = first + second; first = second; second = next; printf("%d\n",next); Output: Enter the number of terms: 5 First 5 terms of Fibonacci series are

17 5(i) FACTORIAL int n, i, fact; i=1; fact=1; scanf( %d, &n); printf( \n enter the number ); while(i<=n) fact=fact*i; i=i+1; printf( Factorial of n is %d, fact): Output: Enter the number: 3 Factorial of n is 6

18 5(j) THE NUMBER DIVISIBLE BY 2BUT NOT DIVISIBLE BY 3 AND 5 UPTO 100 int a,b=0 for(a=0;a<100;a++) if(a%2==0&&a%3!=0&&a%5!=0) printf( %d,a); b++; printf( no of counts %d,b); Output: No of counts: 27

19 6(a) SORTING int a[50],n,i,j,temp; printf("enter the limit \n"); scanf("%d",&n); printf("enter the array element \n"); for(i=0;i<n;i++) scanf("%d",&a[i]); for(i=0;i<n-1;i++) for(j=i+1;j<n;j++) if (a[i]>a[j]) temp=a[i]; a[i]=a[j]; a[j]=temp; printf("the sorted element n is "); for (i=0;i<n;i++) printf("%d",a[i]);

20 OUTPUT: enter the limit 5 enter the array element the sorted element n is

21 6(b) SEARCHING #include <stdio.h> int array[100], search, c, n; printf("enter the number of elements in array\n"); scanf("%d",&n); printf("enter %d integer(s)\n", n); for (c = 0; c < n; c++) scanf("%d", &array[c]); printf("enter the number to search\n"); scanf("%d", &search); for (c = 0; c < n; c++) if (array[c] == search) printf("%d is present at location %d.\n", search, c+1); break; if (c == n) printf("%d is not present in array.\n", search);

22 OUTPUT: enter no.of. elements 5 enter the elements enter the element to be searched 5 the element 5 is in position 2

23 6(c) MATRIX ADDITION int a[10][10],b[10][10],c[10][10]; int m,n,p,q,i,j; printf("enter the row & column size of matrix a \n"); scanf("%d%d",&m,&n); printf("enter the row & column size of matrix b\n"); scanf("%d%d",&p,&q); if (m==p&&n==q) printf("enter the elements of matrix a \n"); for (i=0;i<m;i++) for (j=0;j<n;j++) scanf("%d",&a[i][j]); printf("enter the elements of matrix b \n"); for (i=0;i<p;i++) for(j=0;j<q;j++) scanf ("%d",&b[i][j]); for (i=0;i<m;i++) for (j=0;j<n;j++) c[i][j]=a[i][j]+b[i][j]; printf("the added matrix is"); for (i=0;i<m;i++) printf("\n"); for (j=0;j<n;j++) printf("%3d",c[i][j]);

24 else printf("the row & column size is invalid"); OUTPUT: enter the row & column size of matrix a 2 2 enter the row & column size of matrix b 2 2 enter the elements of matrix a enter the elements of matrix b the added matrix is

25 6(d) MATRIX MULTIPLICATION int a[10][10],b[10][10],c[10][10]; int m,n,p,q,i,j,k; printf("enter the row & column size of matrix a \n"); scanf("%d%d",&m,&n); printf("enter the row & column size of matrix b \n"); scanf("%d%d",&p,&q); if (n==p) printf("enter the elements of matrix a \n"); for (i=0;i<m;i++) for (j=0;j<n;j++) scanf("%d",&a[i][j]); printf("enter the elements of matrix b \n"); for (i=0;i<p;i++) for(j=0;j<q;j++) scanf ("%d",&b[i][j]); for (i=0;i<m;i++) for (j=0;j<n;j++) c[i][j]=0; for (k=0;k<n;k++) c[i][j]=c[i][j]+a[i][k]*b[k][j]; printf("the multiplied matrix is"); for (i=0;i<m;i++) printf("\n"); for (j=0;j<n;j++)

26 printf("%3d",c[i][j]); else printf("not possible to multiplication"); OUTPUT: enter the row & column size of matrix a 2 2 enter the row & column size of matrix b 2 2 enter the elements of matrix a enter the elements of matrix b the multiplied matrix is

27 6(e) MATRIX TRANSPOSE int a[10][10],b[10][10],m,n,i,j; printf("enter the row & column size of matrix a \n"); scanf("%d%d",&m,&n); printf("enter the elements of matrix a \n"); for (i=0;i<m;i++) for (j=0;j<n;j++) scanf("%d",&a[i][j]); for (i=0;i<m;i++) for (j=0;j<n;j++) b[i][j]=a[j][i]; printf("the matrix b is"); for(i=0;i<m;i++) printf("\n"); for(j=0;j<n;j++) printf("%3d",b[i][j]);

28 OUTPUT: enter the row & column size of matrix a 2 2 enter the elements of matrix a The matrix b is

29 7(a) STRING CONCATENATION char str1[10],str2[10],str3[10]; int i,j; printf("enter the two string:"); scanf("%s%s",&str1,&str2); for(i=0;str1[i]!='\0';i++) str3[i]=str1[i]; for(j=0;str2[j]!='\0';j++) str3[i]=str2[j]; i++; str3[i]='\0'; printf("concatenated Stringis...%s\n",str3); OUTPUT: Enter thetwo string: Anna University Concatenated stringis. AnnaUniversity

30 7(b)STRING PALINDROME USING STRING FUNCTION PROGRAM: char str1[40],str2[40]; int n; printf("enter the string 1 \n"); gets (str1); strcpy(str2,str1); strrev(str1); n=strcmp(str1,str2); if(n==0) printf("the given string is palindrome"); else printf("the given string is not palindrome"); OUTPUT: enter the string 1 MALAYALAM The given string is palindrome

31 8(a) SWAPING OF TWO NUMBERS USING CALL BY VALUE void swap(int,int); int a,b,r; printf("enter value for a&b: "); scanf("%d%d",&a,&b); swap(a,b); void swap(int a,int b) int temp; temp=a; a=b; b=temp; printf("after swapping the value for a & b is : %d %d",a,b); Output: enter the value of a & b 5 9 After swapping the value for a & b is 9 5

32 8(b) SWAPING OF TWO NUMBERS USING CALL BY REFERENCE void swap(int *num1, int *num2); int x, y; printf("\nenter First number : "); scanf("%d", &x); printf("\nenter Second number : "); scanf("%d", &y); printf("\nbefore Swaping x = %d and y = %d", x, y); swap(&x, &y); printf("\nafter Swaping x = %d and y = %d", x, y); void swap(int *num1, int *num2) int temp; temp = *num1; *num1 = *num2; *num2 = temp; Output: Enter First number :20 Enter Second number:10 Before Swaping x = 20 and y = 10 After Swaping x = 10 and y = 20

33 9(a) FACTORIAL USING RECURSION int recursive(int); void main () int a,fact; printf("enter the number:"); scanf("%u",&a); fact=recursive(a); printf("the factorial of%d is %d",a,fact); int recursive(x) int x; int f; if(x==0) return(1); else f=x*recursive(x-1); return(f); OUTPUT: Enter thenumber5 The factorial of 5 is 120

34 10(a) EMPLOYEMENT PAYROLL USING STRUCTURE struct employee char name[15]; int empid; float bsal; float net; float gross; ; struct employee emp; float hra,da,tax; printf("\nemployee Details"); printf("\nenter the employee name"); scanf("%s",&emp.name); printf("\nenter the employee id"); scanf("%d",&emp.empid); printf("\nenter the basic salary"); scanf("%f",&emp.bsal); hra=((10*emp.bsal)/100); da=((35*emp.bsal)/100); tax=((15*emp.bsal)/100); emp.gross=emp.bsal+hra+da; emp.net=emp.gross-tax; printf("\nemployee name:%s",emp.name); printf("\nemployee no:%d",emp.empid); printf("\nemployee Basic salary:%f",emp.bsal); printf("\nhra:%f",hra); printf("\nda:%f",da); printf("\ntax:%f",tax); printf("\nnetsalary%f",emp.net); printf("\ngross salary:%f",emp.gross);

35 OUTPUT: Employee Details: Enter the employee name : Robin Enter the employee Id : 100 Enter the basic salary : Employee name : Robin Employee Id : 100 Employee Basic salary : HRA : DA : 10, Tax : Gross salary :

36 10(b) STUDENT MARKLIST USING UNION PROGRAM: main() union student char name[20]; char regno[12]; int avg; char grade; stud[25],*ptr; int i,no; printf( Enter the number of the students... ); scanf( %d,&no); for(i=0;i<no;i++) printf( \n student[%d] information:\n,i+1); printf( Enter the name ); scanf( %s,stud[i].name); printf( \nenter the roll no of the student ); scanf( %s,stud[i].regno); printf( \nenter the average value of the student ); scanf( %d,&stud[i].avg); pt=stud; for(pt=stud;pt<stud+no;ptr++) if(ptr->avg<30) ptr->grade= D ; else if(ptr->avg<50) ptr->grade= C ; else if(ptr->avg<70) ptr->grade= B ; else ptr->grade= A ; printf( \n ); printf( NAME REGISTER-NO AVERAGE GRADE\n ); for(ptr=stud;ptr<stud+no;pt++) printf( %-20s%-10s,ptr->name,ptr->regno); printf( %10d \t %c\n,ptr->avg,ptr->grade);

37 OUTPUT: Enter the number of the students 3 student[1] information: Enter the name Jack Enter the roll no of the student Enter the average value of the student 90 student[2] information: Enter the name Raj Enter the roll no of the student Enter the average value of the student 88 student[3] information: Enter the name Kiran Enter the roll no of the student Enter the average value of the student 75 NAME REGISTER-NO AVERAGE GRADE Jack S Raj A Kiran B

/* Area and circumference of a circle / /celsius to fahrenheit*/

/* Area and circumference of a circle */ #include #include #define pi 3.14 int radius; float area, circum; printf("\nenter radius of the circle : "); scanf("%d",&radius); area = pi