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C programming BY Mazedur
- 1. Md. Mazedur Rahman ID : 07 Section :A PRESENTED BY C Programe
- 2. #include<stdio.h> #include<math.h> //for sqrt() function main() { float a,b,c,dis,r1,r2;//a,b,c are constant coefficients, dis= discriminant and r1,r2 are roots printf ("nQuadratic Equation is of the form: ax^2 + bx + c = 0 n"); printf("nEnter the values of a, b and c: "); scanf("%f %f %f",&a,&b,&c); dis = pow(b,2) - 4*a*c; // calculation of discriminant if(dis < 0) //checking the value of discriminant { printf("nThe roots are imaginary.nn"); printf("Root1= %.3f % + .3fi",-b/(2*a),sqrt(-dis)/(2*a)); printf("nRoot2= %.3f %+ .3fin",-b/(2*a),-sqrt(-dis)/(2*a)); } 1. QUADRATIC EQUATION
- 3. else { r1 = (-b + sqrt(dis))/(2.0*a); r2 = (-b - sqrt(dis))/(2.0*a); printf("nThe first root is = %fnThe second root is = %fn",r1,r2); } return 0; } OUTPUT 1. QUADRATIC EQUATION
- 4. #include<stdio.h> int main() { float fahrenheit, celsius; //get the limit of fibonacci series printf("Enter Fahrenheit: n"); scanf("%f",&fahrenheit); celsius = (fahrenheit - 32)*5/9; printf("Celsius: %f n", celsius); return 0; } OUTPUT Enter Fahrenheit: 100 Celsius: 37.777779 2/ FAH TO CEL This is it, t
- 5. #include <stdio.h> int main() { double n1, n2, n3; printf("Enter three numbers: "); scanf("%lf %lf %lf", &n1, &n2, &n3); if (n1>=n2) { if(n1>=n3) printf("%.2lf is the largest number.", n1); else printf("%.2lf is the largest number.", n3); } else { if(n2>=n3) printf("%.2lf is the largest number.", n2); 5. Largest Number
- 6. else printf("%.2lf is the largest number.",n3); } return 0; } OUTPUT Enter the number : 10,15,20 The largest number is : 20
- 7. #include<stdio.h> #include<conio.h> void main() { double n,sum=0,i; clrscr(); printf("n Please Give The Value of N: "); scanf("%lf",&n); for(i=1;i<=n;i++) { sum = sum + (1/i); if(i==1) printf("n 1 +"); elseif(i==n) printf(" (1/%d) ",i); 7. Harmonic series
- 8. else printf(" (1/%d) + ",i); } printf("nn THE SUM OF THIS SERIES IS %.2lf",sum); getch(); } Output Please Give The Value of N: 5 1 + (1/2) + (1/3) + (1/4) + (1/5) THE SUM OF THIS SERIES IS 2.28
- 9. 8. Leap Year #include <stdio.h> int main() { int year; printf("Enter a year: "); scanf("%d",&year); if(year%4 == 0) { if( year%100 == 0) { if ( year%400 == 0) printf("%d is a leap year.", year); else printf("%d is not a leap year.", year);
- 10. 8. Leap Year } else printf("%d is a leap year.", year ); } else printf("%d is not a leap year.", year); return 0; } Output Enter a year: 1900 1900 is not a leap year.
- 11. 18. Area of Circle #include<stdio.h> int main() { float radius, area; printf("nEnter the radius of Circle : "); scanf("%d", &radius); area = 3.14 * radius * radius; printf("nArea of Circle : %f", area); return (0); } Output Enter the radius of Circle : 2.0 Area of Circle : 6.14
- 12. 14. Factorial #include <stdio.h> int main() { int c, n, fact = 1; printf("Enter a number to calculate it's factorialn"); scanf("%d", &n); for (c = 1; c <= n; c++) fact = fact * c; printf("Factorial of %d = %dn", n, fact); return 0; }