# Finding Minimum scalar product of two vectors in C

## Finding Minimum scalar product in C

Here, in this page we will discuss the program to find the minimum scalar product of two vectors in C programming language. We are given with two integer array need to find the scalar product that will be minimum. ## Working :

• Sort the first array in ascending order,
• Sort the second array in descending order.
• Declare a variable say product = 0.
• Run a loop from index 0 to n
• Set product += (arrr1[i]*arr2[i])
• After complete iteration print product. ### Code in C

Run
```#include <stdio.h>

int main(){

int arr1[] = {1, 2, 6, 3, 7};
int arr2[] = {10, 7, 45, 3, 7};

int n = sizeof(arr1)/sizeof(arr1);

//Sort arr1 in ascending order
for(int i=0; i<n; i++){
for(int j=i+1; j<n; j++){ if(arr1[i]>arr1[j]){
int temp = arr1[i];
arr1[i] = arr1[j];
arr1[j] = temp;
}
}
}

//Sort arr2 in descending order
for(int i=0; i<n; i++){
for(int j=i+1; j<n; j++){
if(arr2[i]<arr2[j]){
int temp = arr2[i];
arr2[i] = arr2[j];
arr2[j] = temp;
}
}
}

int product = 0;
for(int i=0; i<n; i++)
product += arr1[i]*arr2[i];

printf("%d ", product);

}```

`149`