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This repository was archived by the owner on Sep 7, 2025. It is now read-only.
This repository was archived by the owner on Sep 7, 2025. It is now read-only.

Sum  #508

Description

@ultimozz

#include <stdio.h>
#define MAX 100
typedef struct {
int row;
int col;
int value;
}
Element;
int main()
{
Element A[MAX], B[MAX], C[MAX];
int i, j, k;

int m, n, tA, tB; // rows, columns, non-zero elements in A and B
printf("Enter rows, columns and number of non-zero elements of Matrix A: ");
scanf("%d %d %d", &A[0].row, &A[0].col, &A[0].value);
tA = A[0].value;


printf("Enter elements (row column value) for Matrix A:\n");
for(i = 1; i <= tA; i++) {
    scanf("%d %d %d", &A[i].row, &A[i].col, &A[i].value);
}
printf("Enter rows, columns and number of non-zero elements of Matrix B: ");
scanf("%d %d %d", &B[0].row, &B[0].col, &B[0].value);
tB = B[0].value;
printf("Enter elements (row column value) for Matrix B:\n");
for(i = 1; i <= tB; i++) {
    scanf("%d %d %d", &B[i].row, &B[i].col, &B[i].value);
}    
if(A[0].row != B[0].row || A[0].col != B[0].col) {
    printf("Addition not possible. Matrix dimensions do not match.\n");
    return 0;
}
i = j = k = 1; 
C[0].row = A[0].row;
C[0].col = A[0].col;   
while(i <= tA && j <= tB) {
    if(A[i].row < B[j].row || (A[i].row == B[j].row && A[i].col < B[j].col)) {
        C[k++] = A[i++];
    }
    else if(B[j].row < A[i].row || (B[j].row == A[i].row && B[j].col < A[i].col)) {
        C[k++] = B[j++];
    }
    else { 
        int sum = A[i].value + B[j].value;
        if(sum != 0) {
            C[k].row = A[i].row;
            C[k].col = A[i].col;
            C[k].value = sum;
            k++;
        }
        i++;
        j++;
    }
}
while(i <= tA) {
    C[k++] = A[i++];
}
while(j <= tB) {
    C[k++] = B[j++];
}

C[0].value = k - 1;
printf("\nResultant Sparse Matrix (row column value):\n");
for(i = 0; i < k; i++) {
printf("%d %d %d\n", C[i].row, C[i].col, C[i].value);
}

return 0;

}

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