BCA

C LAB :PART A

PROGRAM 1 PROGRAM 2 PROGRAM 3 PROGRAM 4 PROGRAM 5 PROGRAM 6 PROGRAM 7 PROGRAM 8 PROGRAM 9 PROGRAM 10

C LAB : PART B

PROGRAM 1 PROGRAM 2 PROGRAM 3 PROGRAM 4 PROGRAM 5 PROGRAM 6 PROGRAM 7 PROGRAM 8 PROGRAM 9 PROGRAM 10

Sum of upper triangular, lower triangular and diagonal elements of a square matrix.

 

 #include < stdio.h >
int main(){
    int r, c, a[100][100], b[100][100], Lsum,Dsum,Usum , i, j;

    printf("Enter number of rows (between 1 and 100): ");
    scanf("%d", &r);
    printf("Enter number of columns (between 1 and 100): ");
    scanf("%d", &c);

    printf("\nEnter elements of 1st matrix:\n");

    for(i=0; i< r; ++i)
        for(j=0; j< c; ++j)
        {
            printf("Enter element a%d%d: ",i+1,j+1);
            scanf("%d",&a[i][j]);
        }

    printf("Enter elements of 2nd matrix:\n");
    for(i=0; i< r; ++i)
        for(j=0; j< c; ++j)
        {
            printf("Enter element a%d%d: ",i+1, j+1);
            scanf("%d", &b[i][j]);
        }

    // Adding Two matrices

    for(i=0;i< r;++i)
        for(j=0;j< c;++j)
        {
			if (i < j) 
            Usum =Usum+a[i][j]+b[i][j];

		if (i > j) 
            Lsum =Lsum+a[i][j]+b[i][j];


		if (i > j) 
            Dsum =Dsum+a[i][j]+b[i][j];
        }

    // Displaying the result
    printf("\nSum of upper triangle of matrix is: \n\n");

    

            printf("sum= %d   ",sum );

          
    
    return 0;
}