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C Program For SUM OF DIAGONAL ELEMENTS IN MATRIX

void main()

{

int i,j,r,c,a[10][10],z=0;

clrscr();

printf("Enter the r and c");

scanf("%d%d",&r,&c);

for(i=1;i<=r;i++)

{

for(j=1;j<=c;j++)

{

printf("a[%d][%d]=",i,j);

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

}

}

for(i=1;i<=r;i++)

{

for(j=1;j<=c;j++)

{

printf("%d",a[i][j]);

}

printf("\n");

}

for(i=1;i<=r;i++)

{

for(j=1;j<=c;j++)

{

if(i==j)

{

z=z+a[i][j];

}

}

}

printf("sum of digonal elements=%d",z);

getch();

}


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