lab class 6.txt

Q1. Write a program in 'C' to input 3-sides of a triangle and find out area of that triangle.

INPUT-----
#include <stdio.h>
#include <math.h>

int main()
{
    float a,b,c;
    printf("Enter length of side 1: ");
    scanf("%f", &a);
    printf("Enter length of side 2: ");
    scanf("%f", &b);
    printf("Enter length of side 3: ");
    scanf("%f", &c);
    float p= (a+b+c)/2;
    printf("Area of trianlge comes out to be:%f", sqrt(p*(p-a)*(p-b)*(p-c)));

    return 0;
}

OUTPUT----
Enter length of side 1: 12
Enter length of side 2: 14
Enter length of side 3: 17
Area of trianlge comes out to be:83.026728
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Q2. Write a program in 'C' to input marks in 5-subjects, then find out its average marks.

INPUT-----
#include <stdio.h>

int main()
{
    float a,b,c,d,e;
    printf("Enter of subject 1: ");
    scanf("%f", &a);
    printf("Enter of subject 2: ");
    scanf("%f", &b);
    printf("Enter of subject 3: ");
    scanf("%f", &c);
    printf("Enter of subject 4: ");
    scanf("%f", &d);
    printf("Enter of subject 5: ");
    scanf("%f", &e);
    printf("Average comes out to be: %f", (a+b+c+d+e)/5);

    return 0;
}

OUTPUT----
Enter of subject 1: 12
Enter of subject 2: 20
Enter of subject 3: 18
Enter of subject 4: 19
Enter of subject 5: 11
Average comes out to be: 16.000000
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Q3. Write a program in 'C' to initialize gravity using macro and input initial speed then calculate velocity and total distance.

INPUT-----
#include <stdio.h>
#define g 9.8

int main()
{
    float u,s,t,v;
    printf("Enter initial speed: ");
    scanf("%f", &u);
    printf("Enter time period: ");
    scanf("%f", &t);
    v= u + g*t;
    s= u*t + 0.5*g*t*t;
    printf("So, the final speed comes out to be: %f", v);
    printf("\nAnd, the distance covered comes out to be: %f", s);
    
    return 0;
}

OUTPUT----
Enter initial speed: 12
Enter time period: 10
So, the final speed comes out to be: 110.000000
And, the distance covered comes out to be: 610.000000
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Q4. Write a program in 'C' to find out square and cube of a number using macro.

INPUT-----
#include <stdio.h>
#define sq(a) a*a
#define cube(b) b*b*b

int main()
{
    float x;
    printf("Input number to be squared and cubed: ");
    scanf("%f", &x);
    printf("The square and cube of the given number is: %f, %f", sq(x), cube(x));
    
    return 0;
}

OUTPUT----
Input number to be squared and cubed: 12
The square and cube of the given number is: 144.000000, 1728.000000
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Q5. Write a program in 'C' to input radius value then calculate area and circumference of a circle, where 'pi' value is specified using macro.

INPUT-----
#include <stdio.h>
#define pi 3.14

int main()
{
    float r;
    printf("Enter the radius of circle: ");
    scanf("%f", &r);
    printf("The area of circle is: %f", pi*r*r);
    
    return 0;
}

OUTPUT----
Enter the radius of circle: 12
The area of circle is: 452.160000
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Q6. Write a program in 'C' to input the temperature in Fahrenheit and convert it into Celcius, and vice-versa.

INPUT-----
#include <stdio.h>

int main()
{
    float f, c;
    printf("Enter temperature in farhenheit and celcius respectively: ");
    scanf("%f %f", &f, &c);
    printf("Converting both temperatures to celcius and farheinheit respectively, we get: \n");
    printf("%f , %f", (f-32)*0.56, (c*1.8)+32);
    
    return 0;
}

OUTPUT----
Enter temperature in farhenheit and celcius respectively: 213 40
Converting both temperatures to celcius and farheinheit respectively, we get: 
101.360000 , 104.000000
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Q7. Write a program in 'C' to input two integers and add that two integers without using '+' operator.

INPUT-----
#include <stdio.h>
#define sum(a,b) a+b

int main()
{
    int x, y;
    printf("Enter two integers: ");
    scanf("%d %d", &x,&y);
    printf("Sum= %d", sum(x,y));
    
    return 0;
}

OUTPUT----
Enter two integers: 12
13
Sum= 25