C Programming Examples

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c

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

int main()
{
    float a, b, c, S, p;
    
    printf("Please enter a:");
    scanf("%d", &a);

    printf("Please enter b:");
    scanf("%d", &b);
    
    printf("Please enter c:");
    scanf("%d", &c);
    
    p = (a+b+c)/2;
    
    S = sqrt(p*(p-a)*(p-b)*(p-c));
    
    printf("The area of triangle: %d", &S);
    
    return 0;
}

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c

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

int main()
{
    float a, b, c, S, p;
    
    printf("Please enter a:");
    scanf("%d", &a);

    printf("Please enter b:");
    scanf("%d", &b);
    
    printf("Please enter c:");
    scanf("%d", &c);
    
    p = (a+b+c)/2;
    
    S = sqrt(p*(p-a)*(p-b)*(p-c));
    
    printf("The area of triangle: %d", &S);
    
    return 0;
}

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c

#include <stdio.h>

int main()
{
    printf("Hello, World!\n");

    return 0;
}

Compile and Execute C Online

c

#include <stdio.h>

#define GET_BYTE(_N, _B) ((_N) >> ((_B) << 3))
#define XORSWAP(a, b)   ((&(a) == &(b)) ? (a) : ((a)^=(b),(b)^=(a),(a)^=(b)))

int main()
{
    int x = 12345678;
    int k;
    for(k = 0; k < sizeof(x); k+=2) {
        XORSWAP(((char *)&x)[k], ((char *)&x)[k+1]);
    }
    printf("swapped: %lx", x);
    return 0;
}

Compile and Execute C Online

c

#include <stdio.h>

char fakeInput[]="blablafz";

char* removeDuplicate(char str[]);

int main()
{
    //printf("Hello, World!\n");
    
    printf("RESULT: %s \n", removeDuplicate(fakeInput) );
    
    return 0;
}

char* removeDuplicate(char input[]) {
int i = 0;

// temps
int repIndex = 0;
int temp     = 0;

// crveni kvadratic
int j        = 0;
char ch;

printf("Input: %s\n",input);

while((ch = input[i++] ) != '\0') // jel trenutni element eol?
{
    
    j = i; // prije smo i++ inkrementirali, j = i da j ne gleda sam sebe
    
    printf("Looking for %c \n",ch);
    
    while(input[j] != '\0') // to je vec sljedeci element.. jel element 1 eol?
    {
        printf("Checking if %c = %c \n",input[j],ch);
        repIndex = j;
        if(ch == input[repIndex]) // b= l?n b=a?n b=b?y
        {
            printf("Yup\n");
            while(input[repIndex]!='\0')
            {
                printf("Removing %c \n",input[j]);
                temp = repIndex;
                input[temp] = input[++repIndex];
    
            }
    
        } else {
            printf("Next letter.. \n");
            j++; 
            }
    
    }
}

return input;
}

Computer Science Average Exan Calculator

c

#include <iostream>
using namespace std;

int main()
{
    int n, i;
    float num[100], sum = 0.0, average;

    cout << "Enter the numbers of data: ";
    cin >> n;

    while (n > 100 || n <= 0)
    {
        cout << "Error! number should in range of (1 to 100)." << endl;
        cout << "Enter the number again: ";
        cin >> n;
    }

    for (i = 0; i < n; ++i)
    {
        cout << i + 1 << ". Enter number: ";
        cin >> num[i];
        sum += num[i];
    }

    average = sum / n;
    cout << "Average = " << average;

    return 0;
}
}

manish kumar verma mnnit allahabad

c

#include<stdio.h>
float salary(int,int);
int main()
{
	float sal;
	int i,n,hr,pr;
	char name[n];
	printf("How many letters in your name (with space) :-\n");
	scanf("%d",&n);
	printf("Enter your name:-");
	for(int i=0;i<n;i++)
	scanf("%c",&name[i]);
	printf("Enter your working hours:");
	scanf("%f",&hr);
	printf("Enter pay rate:");
	scanf("%f",&pr);
	sal=salary(hr,pr);
	for(int i=0;i<n;i++)
	printf("%c",name[i]);
	printf("\nHour:%fPayrate:%fSalary:%f",hr,pr,sal);
}
float salary(int hr,int pr)
{
	return hr*pr;
}

Compile and Execute C Online

c

#include <stdio.h>

int main()
{
    printf("Hello, World!\n");

    return 0;
}

palindromeproject12345678

c

#include <stdio.h>

int main()
{
    int a;
    int b;
    int rev=0;
    int temp = a;
    while (a>0)
    {
        b=a%10;
        rev=rev*10+b;
        a=a/10;
    }
   // printf("%d \n",rev);
    //printf("%d",temp);
    {
        if (temp==rev)
    {
        printf("palindrome");
    }
    else 
    {
        printf("no");
    }
    }
}

Compile and Execute C Online

c

#include <stdio.h>
char findMSB(int number)
{
    char msb = 0;
    int sizeInBits = 0;
    sizeInBits = sizeof(number)*8;
    
    for(char iii =0;iii<sizeInBits;iii++)
    {
        ((number>>iii)&1)?(msb = iii):NULL; 
    }
    printf("msb is %d\n",msb);
    return msb;
}

char ifAlternate(char msb,int number)
{
    char lsb = 0,isAlternate = 1;
    (number&1)?(lsb = 1):(lsb=0);
    char valueOfBit = 0;
    for(char iii = 0;iii<=msb;iii++)
    {
        
        valueOfBit = (number>>iii)&1;
        printf("\nvalueof bit is %d\n",valueOfBit);
        if((iii%2 == 0)&&(valueOfBit==lsb))
            continue;
        else if((iii%2 != 0)&&(valueOfBit!=lsb))
            continue;
        else 
        {
            isAlternate = 0;
            break;
        }   
    }
    (isAlternate == 1)?printf("\nis alternate\n"):printf("\ni not alternate\n");
    return isAlternate;
}
int main()
{
     int number;
     char msb = 0,isAlternate =0;
     scanf("%d",&number);
     msb = findMSB(number);
     isAlternate = ifAlternate (msb,number); 
    return 0;
}

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