Some Examples of C Progarms

1.    Write a program to display the word “Hello”.
#include <stdio.h>
#include <conio.h>
void main()
{
    Clrscr();
    Printf(“Hello”)
    getch();
}

2.    Write a program to display Name and address of a person.
#include <stdio.h>
#include <conio.h>
void main()
{
    Clrscr();
    Printf(“Name”)
    Printf(“Address;)
    getch();
}

3.    Write a program to display four cities of our country Nepal.
#include <stdio.h>
#include <conio.h>
void main()
{
    Clrscr();
    Printf(“Kathnamdu\n Nepaljunj\n Pokhara\n Biratnagar”)
    getch();
}





4.    Write a program to calculate two numbers sum.
#include <stdio.h>
#include <conio.h>
void main()
{
    int a, b, sum;
    clrscr();
    printf(“Input the First number”);
    scanf(“%d”, &a);
    printf(“Input the Second number’);
    scanf(“%d”, &b);
    sum=a*b;
    printf(“sum of the two number”);
    getch();
}

5.    Write a program to input Length and breadth of the room and calculate perimeter and area of the room.
#include <stdio.h>
#include <conio.h>
void main()
{
    int l,b,perimeter,area;
    clrscr();
    printf(“ Input the length”);
    scanf(%d”, &l);
    printf(“ Input the breadth”);
    scanf( “%d”, &b);
    area= l*b;
    perimater=2*(l+b);
    printf(“ Area of the room=%d\n”,area);
    printf(“ Perimater of the room=%d”, perimeter);
    getch();
}

6.    Write a program to calculate Area of the circle.
#include <stdio.h>
#include <conio.h>
void main()
{
    float r, area;
    clrscr();
    printf(“ Input the radious of the circle”);
    scanf(“%f”, &r);
    area=3.14*r*r
    printf(“Area of the circle=%f”,area);
    getch();
}


7.    Write a program to input Principal, rate and time. Calculate the simple interest.
#include <stdio.h>
#include <conio.h>
void main()
{
    int p,r,t,si;
    clrscr();
    printf(“Input principal”);
    scanf(“%d”, &p);
    printf(“Input rate”);
    scanf(“%d”, &r);
    printf(“Input time”);
    scanf(“%d”, &t);
    si=p*t*r/100;
    printf(“Simple Interest=%d”,si);
    getch();
}

8.    Write a program to input two numbers and display Quotation and reminder. Where (a) is divisible by (b).
#include <stdio.h>
#include <conio.h>
void main()
{
    int a,b,quo,rem;
    clrscr();
    printf(“Input first subject”);
    scanf(“%d”, &a);
    printf(“Input second subject”);
    scanf(“%d”, &b);
    quo=a/b;
    rem=a%b;
    printf(“Quotation=%d\n Reminder=%d”,quo,rem);
    getch();
}

9.    Write a program to input Marks of 5 subjects and calculate the total and percentage.
#include <stdio.h>
#include <conio.h>
void main()
{
    int a,b,c,d,e,total,per;
    clrscr();
    printf(“Input first subject”);
    scanf(“%d”, &a);
    printf(“Input second subject”);
    scanf(“%d”, &b);
    printf(“Input third subject”);
    scanf(“%d”, &c);
    printf(“Input fourth subject”);
    scanf(“%d”, &d);
    printf(“Input fifth subject”);
    scanf(“%d”, &e);
    total=a+b+c+d+e;
    per=total/5
    printf(“total=%d and Percentage=%d”,total,per);
    getch();
}


11. Write a program to input Length in km and display in meter, centimeter and millimeter.
#include <stdio.h>
#include <conio.h>
void main()
{
    int l,m,cm;
    clrscr();
    printf(“Input lngth in km”);
    scanf(“%d”, &l);
    m=l*1000;
    cm=l*1000*100;  (m*100)
    mm=l*1000*100*10; (cm*10)
    printf(“Meter=%d\n centimeter=%d
    \n millimeter=%d”,m,cm,mm);
    getch();
}


12. Write a program to input a time in minutes and display it in the hour and minutes.
#include <stdio.h>
#include <conio.h>
void main()
{
    int t, hr, min;
    clrscr();
    printf(“Input time in minute”);
    scanf(“%d”, &t);
    hr=t/60
    min=t%60
    printf(“Time=%d hr and %d min”,hr,min);
    getch();
}
   
13. Write a program to input time in second and display it in the hour and minutes.
#include <stdio.h>
#include <conio.h>
void main()
{
    int t, hr, min sec, remsec;
    clrscr();
    printf(“Input time in minute”);
    scanf(“%d”, &t);
    hr=t/3600;
    remsec=t%3600;
    min=remsec/60;
    sec=remsec%60;
    printf(“Time=%d hr and %d min”,hr,min);
    getch();
}

14. Write a program to input Length in cm and display in kilometer, meter and centimeter.
#include <stdio.h>
#include <conio.h>
void main()
{
    int l,km,m,cm;
    clrscr();
    printf(“Input lngth in cm”);
    scanf(“%d”, &l);
    km=l/100000;
    l=l%100000;
    m=l/1000;
    cm=l%1000;
    printf(“Length=%d km, %dm, and %dcm”,km,m,cm;
    getch();
}

15. Write a program to input number of days and convert it into year, month and days.
#include <stdio.h>
#include <conio.h>
void main()
{
    int day,yrs,remday;
    clrscr();
    printf(“Input number of days”);
    scanf(“%d”, &day);
    yrs=day/365;
    remday=day%365
    mth=day/30;
    day=day%30;
    printf(“Days=%dyrs, %dmth, %dday”,yrs,mth,day);
    getch();
}

16. Write a progam to input two digit number and display its reverse.
#include <stdio.h>
#include <conio.h>
void main()
{
    int ab, quo, rem, rev;
    clrscr();
    printf(“Input two digits number”);
    scanf(“%d”, &ab);
    quo=ab/10;
`   rem=ab%10;
rev=rem+quo;
printf(“reverse=%d”,rev);
getch();
}

17. Write a progam to input two digit number and display its sum.
#include <stdio.h>
#include <conio.h>
void main()
{
    int ab, quo, rem, sum;
    clrscr();
    printf(“Input two digits number”);
    scanf(“%d”, &ab);
    quo=ab/10;
`    rem=ab%10;
sum=rem+quo;
printf(“Sum=%d”,sum);
getch();
}

18. Write a program to input Length in mm and display in kilometer, meter, centimeter and millimeter.
#include <stdio.h>
#include <conio.h>
void main()
{
    int l,km,m,cm,mm;
    clrscr();
    printf(“Input lngth in mm”);
    scanf(“%d”, &l);
    km=l/100000;
    l=l%100000;
    m=l/1000;
    cm=l%1000;
    printf(“Length=%d km, %dm, and %dcm” ,km,m,cm,mm);
    getch();
}

19. Write a program to input the age of the person and display the person is eligible for voting or nor.
#include <stdio.h>
#include <conio.h>
void main()
{
    int n;
    clrscr();
    printf(“Input age of the person”);
    scanf(“%d”, &n);
    if(n>=18)
    {
        printf(“The person is eligible for voting”);
    }
    else
    {
        printf(“The person is not eligible foe voting”);
    }
    getch();
}

20. Write a program to input a number and display if the number is divisible by 5 or not
#include <stdio.h>
#include <conio.h>
void main()
{
    int n;
    clrscr();
    printf(“Input age of the number”);
    scanf(“%d”, &n);
    if(n/5==0)
    {
        printf(“Number is divisible by 5”);
    }
    else
    {
        printf(“Number is not divisible by 5”);
    }
    getch();
}

21. Write a program to input two numbers and display the largest among them.
#include <stdio.h>
#include <conio.h>
void main()
{
    int a,b;
    clrscr();
    printf(“Input two numbers”);
    scanf(“%d%d”, &a, &b);
    if(a>b)
    {
        printf(“%d is the largest”, a);
    }
    Else if(b>a)
    {
        printf(“%d is the largest”, b);
    }
    else

    printf(“%d and %d are equal”, a,b);
    }
    getch();
}

22. Write a program to input C.P. and S.P. of a product and display eighter profit or lost.
#include <stdio.h>
#include <conio.h>
void main()
{
    int cp,sp;
    clrscr();
    printf(“Input sp of the product”);
    scanf(“%d”, &sp);
    if(sp>cp)
    {
        printf(“%d is profit”,sp);
    }
    Else if (cp>sp)
    {
        printf(“%d is loss”, cp);
    }
    Else
    {
        Printf(“%d and %d are equal”,sp,cp);
    }
    getch();
}

23. Write a program to input C.P. and S.P. of a product and display eighter profit or lost amount.
#include <stdio.h>
#include <conio.h>
void main()
{
    int cp,sp,profit,loss;
    clrscr();
    printf(“Input sp and cp of the product”);
    scanf(“%d%d”, &sp, &cp);
    if(sp>cp)
    {
        Profit=sp-cp;
        printf(“Profit Amount=%d”,profit);
    }
    Else if (cp>sp)
    {
        printf(“Loss Amount=%d “, loss);
    }
    Else
    {
        Printf(“Neither profit nor Loss”);
    }
    getch();
}

24. Write a program to input sales of a day and calculate the commission amount on the basis of the sales on following condition: >20,000=20% commission, >=10,000=10%comision,
Other wise, 5% commission.
#include <stdio.h>
#include <conio.h>
void main()
{
    float s,com;
    clrscr();
    printf(“Input sales amount of the day”);
    scanf(“%f”, &s);
    if(s>20000)
    {
        Com=0.2*s;
        printf(“ Commission Amount=%f”, com);
    }
    Else if (s>=10000)
    {
        Com=0.1*s;
        printf(“Commission Amount=%f”, com);
    }
    Else if(s<10000)
    {
        Com=0.05*s;
        Printf(“Commission Amount=%f”,com);
    }
    getch();
}

25. Write a progam ti input mark of 5 subject and calculate and display total, percentage and division.
#include <stdio.h>
#include <conio.h>
void main()
{
    int a,b,c,d,e,total,per,div0;
    clrscr();
    printf(“Input the mark of Fist Subject”);
    scanf(“%d”, &a);
    printf(“Input the mark of Second Subject”);
    scanf(“%d”, &b);
    printf(“Input the mark of Third Subject”);
    scanf(“%d”, &c);
    printf(“Input the mark of Fourth Subject”);
    scanf(“%d”, &d);
    printf(“Input the mark of Fifth Subject”);
    scanf(“%d”, &e);
    total=a+b+c+d+e;
    per=total/5;
    if(per>=75)
    {
        printf(“Distinction”);
    }
    Else if (per>=60)
    {
        printf(“First”);
    }
    Else if (per>=50)
    {
        Printf(“Second”);
    Else if (per>=35)
    {
        Printf(“Third”);
    }
    Else
    {
    Printf(“Fail”);
    }
    getch();
}