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matrix multiplication in c using functions and pointers

 #include <stdio.h> #define ROWS 3 #define COLS 3 void matrixMultiply(int *mat1, int *mat2, int *result, int rows1, int cols1, int cols2) {     int i, j, k;     // Multiplying matrices     for (i = 0; i < rows1; i++) {         for (j = 0; j < cols2; j++) {             *(result + i * cols2 + j) = 0;             for (k = 0; k < cols1; k++) {                 *(result + i * cols2 + j) += *(mat1 + i * cols1 + k) * *(mat2 + k * cols2 + j);             }         }     } } void displayMatrix(int *mat, int rows, int cols) {     int i, j;     // Displaying matrix     for (i = 0; i < rows; i++) {         for (j = 0; j < cols; j++) {             printf("%d\t", *(mat + i * cols + j));         }         printf("\n");     } } int main() {     int mat1[ROWS][COLS] = {{1, 2, 3},                             {4, 5, 6},                             {7, 8, 9}};     int mat2[ROWS][COLS] = {{9, 8, 7},                             {6, 5, 4},                             {

how to add n number of element of array

how to add n number  of element of array 

how to Addition the elements of array

#include<stdio.h>

#include<conio.h>

int main(void){

int a[10],b,i,sum;

printf("Enter number of elements to add :");

scanf("%d",&b);

sum=0;

for(i=1; i<=b; i++){

printf("Enter values :");

scanf("%d",&a[i]);

sum=sum+a[i];

}

printf("Result :%d",sum);

getch();

}





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