Tuesday, December 23, 2014

sum & Average of an Array in c pgm



21. Program
#include 
#include 
int main( )
{
   char str[100];
   int i;
 
   printf( "Enter a value :");
   scanf("%s %d", str, &i);
 
   printf( "\nYou entered: %s %d ", str, i);
 
   return 0;
getch();
}

Output
Enter a value : seven 7
You entered: seven 7


22. Calculate sum & Average of an Array
#include  
#include 
#define Maxsize 10
 
void main()
{
int array[Maxsize];
int i, num, negative_sum = 0, positive_sum = 0;
float total = 0.0, average;
clrscr(); 
printf ("Enter the value of N \n");
scanf("%d", &num);
printf("Enter %d numbers (-ve, +ve and zero) \n", num);
for (i = 0; i < num; i++)
{
scanf("%d", &array[i]);
}
printf("Input array elements \n");
for (i = 0; i < num; i++)
{
printf("%+3d\n", array[i]);
}
for (i = 0; i < num; i++)
{
if (array[i] < 0)
{
negative_sum = negative_sum + array[i];
}
else if (array[i] > 0)
{
positive_sum = positive_sum + array[i];
}
else if (array[i] == 0)
{
;
}
total = total + array[i] ;
}
average = total / num;
printf("\n Sum of all negative numbers =  %d\n", negative_sum);
printf("Sum of all positive numbers =  %d\n", positive_sum);
printf("\n Average of all input numbers =  %.2f\n", average);
getch();
}
Output
Enter the value of N
10
Enter 10 numbers (-ve, +ve and zero)
-8
9
-100
-80
90
45
-23
-1
0
16
Input array elements
 -8
 +9
-100
-80
+90
+45
-23
 -1
 +0
+16
 
Sum of all negative numbers =  -212
Sum of all positive numbers =  160
 
Average of all input numbers =  -5.20

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