*OUTPUT************* Enter the two number The addition of two number is =100

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1 /* 1. Program to calculate the addition of two number using function */ int n1,n2,result; printf(" Enter the two number \n"); scanf("%d%d",&n1,&n2); result=addnum(n1,n2); printf(" The addition of two number is =%d ",result); /* Function declaration */ int addnum(a,b) int a,b; int sum; sum=a+b; return(sum); Enter the two number The addition of two number is =100

2 /* 2. Program to calculate the division of two number using function */ int n1,n2,result; printf(" Enter the two number \n"); scanf("%d%d",&n1,&n2); result=divnum(n1,n2); printf(" The division of two number is =%d ",result); /* Function declaration */ int divnum(a,b) int a,b; int div; div=a/b; return(div); Enter the two number The division of two number is =50

3 /* 3. Program to calculate the multiplication of two number using function */ int n1,n2,result; printf(" Enter the two number \n"); scanf("%d%d",&n1,&n2); result=mulnum(n1,n2); printf(" The multiplication of two number is =%d ",result); /* Function declaration */ int mulnum(a,b) int a,b; int mul; mul=a*b; return(mul); Enter the two number The multiplication of two number is =144

4 /* 4. Program to find the GCD & LCM of two number using function*/ int n1,n2,lcm,gcd; printf(" Enter the two integer numbers\n"); scanf("%d%d",&n1,&n2); gcd=gcd1(n1,n2); lcm=(n1*n2)/gcd; printf(" The GCD number is %d \n",gcd); printf("the LCM number is =%d \n ",lcm); /*function declaration */ int gcd1(int a, int b) int num,den,rem; if(a>=b) num=a; den=b; else num=b; den=a; rem=num%den; while(rem!=0) num=den; den=rem; rem=num%den; return(den);

5 Enter the two integer numbers The GCD number is 5 The LCM number is =100

6 /* 5. Program to find the given year is leap or not using function */ int year; printf(" Enter the year\n"); scanf("%d",&year); leapyear(year); leapyear(int year) if(year%4==0) printf("the given year %d is a leap year ",year); else printf("the given year %d is not a leap year",year); Enter the year 2004 The given year 2004 is a leap year Enter the year 2010 The given year 2010 is not a leap year

7 /* 6. Program to find the factorial of given numbers using Recursive function*/ int n,f; printf("enter the number \n"); scanf("%d",&n); f=fact(n); printf("the factorial is = %d \n ",f); int fact(x) int x; int f; if(x= =0) return(1); else f=x*fact(x-1); return(f); Enter the number 4 The factorial is = 24 Enter the number 0 The factorial is = 1

8 /* 7. Program to sort an array using function */ #include<conio.h> int i; static int marks[5]=35,20,60,10,90; printf(" Marks before sorting \n"); for(i=0;i<5;i++) printf("%4d",marks[i]); printf("\n"); sort(5,marks); printf("marks after sorting \n"); for(i=0;i<5;i++) printf("%4d",marks[i]); sort(m,x) int m,x[]; int i,j,t; for(i=1;i<=m;i++) for(j=1;j<=m;j++) if(x[j-1]>=x[j]) t=x[j-1]; x[j-1]=x[j]; x[j]=t; Marks before sorting Marks after sorting

9 /* 8. Program to illustrate passing of the entire array as an argument*/ #include<conio.h> int i, a[6]; printf("enter array element \n"); for(i=0;i<5;i++) scanf("%d",&a[i]); arraypass(a); int i; arraypass(int a1[]) printf("the entered array element is \n"); for(i=0;i<5;i++) printf("%d\n",a1[i]); Enter array element The entered array element is

10 /* 9.Program to illustrate the comparision of two variable using structure */ struct class int n; char name[10]; float marks; ; int x; struct class student1=1,"preeti",78.9; struct class student2=2,"anand",74.33; struct class student3; student3=student2; x=(student3.n==student2.n)&&(student3.marks == student2.marks)?1:0; if(x==1) printf("\n student2 & student3 are same \n"); printf("rollno\tnmae\tmarks\n"); printf("%d\t%s\t%f\t",student3.n,student3.name,student3.marks); else printf("\n student2 & student 3 are different \n"); printf("rollno\tnmae\tmarks\n"); printf("%d\t%s\t%f\t",student1.n,student1.name,student1.marks); student2 & student3 are same Rollno Nmae Marks 2 Anand

11 /* 10. Program to find the average marks of student obtained in Three subject using structure */ struct stdent int rollno,m1,m2,m3; char name[20]; float avg; st[20]; int i,total,n; printf("enter the no of student information \n"); scanf("%d",&n); printf("enter %d students information \n",n); for(i=0;i<n;i++) printf("student %ds information is ",i+1); printf("\n \n"); printf("rollno:="); scanf("%d",&st[i].rollno); printf("name:="); scanf("%s",&st[i].name); printf("subject1 marks :="); scanf("%d",&st[i].m1); printf("subject2 marks:"); scanf("%d",&st[i].m2); printf("subject3 marks:="); scanf("%d",&st[i].m3); printf("****************************************************** **\n"); printf("rollno\tname\tmarks1\tmarks2\tmarks3\ttotal\taverage\n"); printf("****************************************************** **\n"); for(i=0;i<n;i++)

12 total=st[i].m1+st[i].m2+st[i].m3; st[i].avg=total/3; printf("%d\t%s\t%d\t%d\t%d\t%d\t%f\n",st[i].rollno,st[i].name,st[i].m1,st[i].m2,st[i].m, total,st[i].avg); printf("****************************************************** *\n"); Enter the no of student information 2 Enter 2 students information Student 1s information is Rollno:=1 Name:=Preeti Subject1 marks :=90 Subject2 marks:90 Subject3 marks:=90 Student 2s information is Rollno:=2 Name:=Anand Subject1 marks :=90 Subject2 marks:90 Subject3 marks:=90 ******************************************************** Rollno Name Marks1 Marks2 Marks3 Total Average ******************************************************** 1 Preeti Anand *******************************************************

13 /* 11. Program to illustrate Union */ union number int n1; float n2; ; union number x; printf("enter the value of n1 \n"); scanf("%d",&x.n1); printf("enter the value of n2 \n"); scanf("%f",&x.n2); printf("\n n1=%d",x.n1); printf("\n n2=%f",x.n2); Enter the value of n1 40 Enter the value of n2 70 n1=0 n2=

14 /* 12. Program to swap two number using pointer */ int n1,n2; printf("enter the two number \n"); scanf("%d%d", &n1,&n2); printf("before swap n1=%d and n2=%d \n",n1,n2); swap(&n1,&n2); printf("after the swap n1=%d and n2=%d \n",n1,n2); int swap(int *k1,int *k2) int t; t=*k1; *k1=*k2; *k2=t; Enter the two number Before swap n1=60 and n2=100 After the swap n1=100 and n2=60

15 /* 13.Program to Access a varible using pointer */ int x,y; int *ptr; x=10; ptr=&x; y=*ptr; printf(" The value of x is %d \n\n",x); printf("%d is stored at address %u \n",x,&x); printf("%d is stored at address %u \n",*&x,&x); printf("%d is stored address %u \n ",*ptr,ptr); printf("%d is stored at address %u \n",y,*&ptr); printf("%d is stored at address %u \n ", y,&y); The value of x is is stored at address is stored at address is stored address is stored at address is stored at address 65492

16 /* 14. Program to illustrate a Macro substitution */ #define PI float area; int r; printf("enter the radius \n"); scanf("%d",&r); area= r*r*pi; printf(" Area of circle is %f \n",area); Enter the radius 2 Area of circle is

17 /* 15. Program to find the largest of three numbers using Macro */ #define large(x,y)((x>y)?x:y) int a,b,c,lar; printf(" Enter the three number \n"); scanf("%d%d%d",&a,&b,&c); lar=large(a,large(b,c)); printf(" The largest values is %d",lar); Enter the three number The largest values is 70

18 /* 16.Program illustrate the macros with arguments */ #define sqr(x) (x*x) float p,sqr1; printf(" Enter the value of p\n"); scanf("%f",&p); sqr1=sqr(p); printf(" square number is =%2.0f\n", sqr1); Enter the value of p 12 Square number is =144 Enter the value of p 16 Square number is =256

19 /* 17. Program to find the largest of two number using function */ int a,b; printf("enter the two numbers \n"); scanf("%d%d",&a,&b); large(a,b); /* function to compute the largest */ large( x,y) int x,y; if(x>y) printf("tthe largest value is %d\n",x); else printf("the largest value is %d\n",y); Enter the two numbers The largest value is 80 Enter the two numbers The largest value is 100

20 /* 18.Program to determines whether it is an alphabet,a digit or a special symbol */ char ch,ct; char char_is(); printf("enter a character \n"); ch=getchar(); ct=char_is(ch); if(ct=='a') printf("it is a alphabet \n "); else if(ct=='d') printf("it is a digit \n"); else if(ct=='x') printf("it is a special symbol \n"); char char_is(cyar) char cyar; if((cyar>='a'&& cyar<='z') (cyar>='a' && cyar<='z')) return('a'); else if(cyar>='0'&& cyar<='9') return('d'); else return('x'); Enter a character r It is a alphabet Enter a character 9 It is a digit Enter a character * It is a special symbol

21 /* 19. Program to compute the area of triangle */ #include<math.h> float s1,s2,s3,area; float tri_area(); printf("enter the thre sides of a triangle \n"); scanf("%f%f%f",&s1,&s2,&s3); area=tri_area(s1,s2,s3); printf("the area of the triangle =%f\n",area); float tri_area(a,b,c) float a,b,c; float s,area; s=(a+b+c)/2; area=sqrt(s*(s-a)*(s-b)*(s-c)); return(area); Enter the thre sides of a triangle The area of the triangle =

22 /* 20. Program writing to and reading from a file */ FILE *f1; char c; printf("data input \n"); f1=fopen("input","w"); while((c=getchar())!=eof) putc(c,f1); fclose(f1); printf("data output \n"); f1=fopen("input","r"); while((c=getc(f1))!=eof) printf("%c",c); fclose(f1); Data input This is file handling program ^Z Data output This is file handling program

23 INDEX C PROGRAMS SLNO NAME OF THE PROGRAM 1 Program to calculate the addition of two number using function 2 Program to calculate the division of two number using function 3 Program to calculate the multiplication of two number using function 4 Program to find the GCD & LCM of two number using function 5 Program to find the given year is leap or not using function 6 Program to find the factorial of given numbers using Recursive function PAGE NO REMARKS 7 Program to sort an array using function 8 Program to illustrate passing of the entire array as an argument 9 program to illustrate the comparison of two variable using structure 10 Program to find the average marks of student obtained in three subject using structure 11 Program to illustrate Union 12 Program to swap two number using pointer 13 Program to Access a variable using pointer 14 Program to illustrate a Macro substitution 15 Program to find the largest of three numbers using Macro 16 Program illustrate the macros with arguments 17 Program to find the largest of two number using function 18 Program to determines whether it is an alphabet digit or a special symbol 19 Program to compute the area of triangle 20 Program writing to and reading from a file

PROGRAMMING IN C LAB MANUAL FOR DIPLOMA IN ECE/EEE

PROGRAMMING IN C LAB MANUAL FOR DIPLOMA IN ECE/EEE 1. Write a C program to perform addition, subtraction, multiplication and division of two numbers. # include # include int a, b,sum,