Tag: C for Beginners

Random Numbers in C #include
#include

int main() {
int c, n;

printf(“Ten random numbers in [1,100]\n”);

for (c = 1; c <= 10; c++) {
n = rand() % 100 + 1;
printf(“%d\n”, n);
}

return 0;
}

Add N Numbers in C Programming

#include

int main()
{
int n, sum = 0, c, value;

printf(“Enter the number of integers you want to add\n”);
scanf(“%d”, &n);

printf(“Enter %d integers\n”,n);

for (c = 1; c <= n; c++)
{
scanf(“%d”, &value);
sum = sum + value;
}

printf(“Sum of entered integers = %d\n”,sum);

return 0;
}

Leap Year

 

#include 
 
int main()
{
  int year;
 
  printf("Enter a year to check if it is a leap year\n");
  scanf("%d", &year);
 
  if ( year%400 == 0)
    printf("%d is a leap year.\n", year);
  else if ( year%100 == 0)
    printf("%d is not a leap year.\n", year);
  else if ( year%4 == 0 )
    printf("%d is a leap year.\n", year);
  else
    printf("%d is not a leap year.\n", year);  
 
  return 0;
}

C Program to Create a File & Store Information

                                                 C Program to Create a File & Store Information

/*

* C program to create a file called emp.rec and store information
* about a person, in terms of his name, age and salary.
*/
#include

void main()
{
FILE *fptr;
char name[20];
int age;
float salary;

/*  open for writing */
fptr = fopen(“emp.rec”, “w”);

if (fptr == NULL)
{
printf(“File does not exists \n”);
return;
}
printf(“Enter the name \n”);
scanf(“%s”, name);
fprintf(fptr, “Name    = %s\n”, name);
printf(“Enter the age\n”);
scanf(“%d”, &age);
fprintf(fptr, “Age     = %d\n”, age);
printf(“Enter the salary\n”);
scanf(“%f”, &salary);
fprintf(fptr, “Salary  = %.2f\n”, salary);
fclose(fptr);
}

 

Output:

Enter the name
ABCD
Enter the age
45
Enter the salary
355550

 

C Program to Sum of Natural numbers

/* This program is solved using while loop. */
#include
int main()
{
int n, count, sum=0;
printf(“Enter an integer: “);
scanf(“%d”,&n);
count=1;
while(countn */
{
sum+=count; /* sum=sum+count */
++count;
}
printf(“Sum = %d”,sum);
return 0;
}