C PROGRAMMING

// @C_language_programing

#include<stdio.h>

int main()
{
    int rem,num,i=1,j;
    char Hexa[50];
     
    printf("Enter Decimal no: ");
    scanf("%d", &num);
    
    if(num!=0){
    while(num!=0){
    rem = num % 16;
    
    if(rem<10)
    rem=rem+48;
    
    else
    rem=rem+55;
    
    Hexa[i++]=rem;
    num=num/16;
    }}
    else{
    printf("0");
    }
    printf("\nHexadecimal Number is ");
    for(j=i;0<j;j--){
    printf("%c",Hexa[j]);
    }
    return 0;
}

#include<stdio.h>

#include<math.h>
main()
{
int choice;
printf("Enter\n1 for Triangle\n2 for Square\n3 for Circle\n4 for Rectangle\n5 for Parallelogram\n");
scanf("%d",&choice);
switch(choice)
{
 case 1: 
{
 int a,b,c;
 float s,area;
 printf("Enter sides of triangle\n");
 scanf("%d %d %d",&a,&b,&c);
 s=(float)(a+b+c)/2;
 area=(float)(sqrt(s*(s-a)*(s-b)*(s-c)));
 printf("Area of Triangle with sides %d,%d,%d is %f\n",a,b,c,area);
 break;
 
}
 case 2: 
{
 float side,area;
 printf("Enter Sides of Square\n");
 scanf("%f",&side);
 area=(float)side*side;
 printf("Area of Square is %f\n",area);
 break;
 
}
 case 3: 
{
 float radius,area;
 printf("Enter Radius of Circle\n");
 scanf("%f",&radius);
 area=(float)3.14159*radius*radius;
 printf("Area of Circle with radius %f is %f\n",radius,area);
 break;
 
}
 case 4: 
{
 float len,breadth,area;
 printf("Enter Length and Breadth of Rectangle\n");
 scanf("%f %f",&len,&breadth);
 area=(float)len*breadth;
 printf("Area of Rectangle is %f\n",area);
 break;
 
}
 case 5: 
{
 float base,height,area;
 printf("Enter base and height of Parallelogram\n");
 scanf("%f %f",&base,&height);
 area=(float)base*height;
 printf("Enter area of Parallelogram is %f\n",area);
 break;
 
}
 default: 
{
 printf("Invalid Choice\n");
 break;
 
}

}

}

void sumAndMax(int ,int ,int ,int*,int*);
#include<stdio.h>
int main()
{
    int a=50,b=90,c=20,sum,max;
    sumAndMax(a,b,c,&sum,&max);
    printf("Sum= %d , Maximum number= %d",sum,max);
    return 0;
}
void sumAndMax(int x,int y,int z,int *p,int *q){
    *p=x+y+z;
    *q=(x>y && x>z)?x:(y>z?y:z);  // greatest of three numbers using ternary operator
}

Program to calculate distance between two points.
-----------------------------------------------------
Program:
  #include<stdio.h>
  #include<math.h>
   int main()
  { float x1,x2,y1,y2,distance;
    printf("Enter coardinates of first point(x1,y1):\n");
    scanf("%f%f",&x1,&y1);
    printf("Enter coordinates of second point(x2,y2):\n");
    scanf("%f%f",&x2,&y2);
    distance=sqrt(pow((x2-x1),2)+pow((y2-y1),2));
   printf ("Distance=%.2f",distance);
        return 0;
}
-----------------------------------------------------------
#basicprograms

#include <stdio.h>
int main()
{
    int a=0,b=1,c=1,n;
    printf("Enter no.: ");    
    scanf("%d",&n);
    printf("The series is:\n");
    for(int i=1;i<=n;i++)
    {
        printf("%d ",c);
        c=a+b;
        a=b;
        b=c;
    }
    return 0;
}

#include<stdio.h>

#include<string.h>
main()
{
int i,j;
float salary,bonus;
char gender;
printf("Enter M for Male and F for Femalen");
scanf("%c",&gender);
printf("Enter Salaryn");
scanf("%f",&salary);
if(gender=='M' || gender=='m') 
{
if(salary>10000) bonus=(float)(salary*0.05);
//0.05--5% else bonus=(float)(salary*0.07);

}
if(gender=='F' || gender=='f') 
{
if(salary>10000) bonus=(float)(salary*0.1);
//0.1--10% else bonus=(float)(salary*0.12);

}
salary+=bonus;
printf("Bonus=%.2fnSalary=%.2fn",bonus,salary);

}