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FIBONACCI SERIES USING RECURSION

Fibonacci series using recursion #include < stdio.h > int Fibonacci(int); main() {   int n, i = 0, c;   printf("Enter the number of terms ");   scanf("%d",&n);   printf("First %d terms of Fibonacci series are :-\n", n);   for ( c = 1 ; c < = n ; c++ )   {   printf("%d\n", Fibonacci(i));   i++;   }   return 0; } int Fibonacci(int n) {   if ( n == 0 )   return 0;   else if ( n == 1 )   return 1;   else   return ( Fibonacci(n-1) + Fibonacci(n-2) );   /*adding Fibonacci of (n-1) & (n-2) by recursive calling it*/ }
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FIBONACCI SERIES USING LOOP

Fibonacci series using loop #include < stdio.h > int main() {   int n, first = 0, second = 1, next, c;   printf("Enter the number of terms\n");   scanf("%d",&n);   printf("First %d terms of Fibonacci series are :-\n",n);   for ( c = 0 ; c < n ; c++ )   {   if ( c < = 1 )   next = c;   else   {   next = first + second;   first = second;   second = next;   /*replaced first no by second & second by addition of first & second */   }   printf("%d\n",next);   }   return 0; }
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HELLO WORLD

Hello World #include < stdio.h > //tells compiler to include std input output header file. int main() {   printf("Hello world\n");   //prints Hello world on user screen   return 0;   }
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AREA OF TRIANGLE

Area of triangle #include < stdio.h > void main() {   int height, base;   float ans;/*ans may come in fractions*/   printf("Enter height and base");   scanf("%d %d",&height, &base);   ans= (1/2)*height*base;   /* mathematical formula*/   printf("Area if triangle is %f",ans); }
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ODD OR EVEN

Odd or Even #include < stdio.h > main() {   int n;   printf("Enter an integer\n");   scanf("%d",&n); /*if n is completely divisible by 2 then prints even otherwise n is odd*/   if ( n%2 == 0 )     printf("Even\n");   else     printf("Odd\n");   return 0; }
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ADD N NUMBERS

Add n numbers #include < stdio.h > 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;   /*adding each no in sum*/   }   printf("Sum of entered integers = %d\n",sum);   return 0; }
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ADD SUBTRACT MULTIPLY DIVIDE

Add subtract multiply divide #include < stdio.h > int main() {   int first, second, add, subtract, multiply;   float divide;   printf("Enter two integers\n");   scanf("%d%d", &first, &second);   add = first + second;   subtract = first - second;   multiply = first * second;   divide = first / (float)second;   //typecasting   printf("Sum = %d\n",add);   printf("Difference = %d\n",subtract);   printf("Multiplication = %d\n",multiply);   printf("Division = %.2f\n",divide);   return 0; }
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