Input a matrix in 3-D array and calculate the sum of its diagonal – Simple loop and array question , matrix question , 2d array question

Input a matrix in 3-D array and calculate the sum of its diagonal – Simple loop and array question , matrix question , 2d array question

#include<stdio.h>
int main(int argc, char const *argv[])
{
int r,c,arr[10][10],i,j,sum=0;
printf(“enter the no of rows and columns=”);
scanf(“%d%d”,&r,&c);
printf(“enter the element:\n”);
{
for(i=0;i<r;i++)
{
for(j=0;j<c;j++)
scanf(“%d”,&arr[i][j]);
}
}
for(i=0;i<r;i++)
{
for(j=0;j<c;j++){

if(i==j||i+j==r-1){
sum=sum+arr[i][j];
}
}
}
printf(“sum=%d”,sum);
return 0;
}

Programmed by : Sadhana

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