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how to sum a 9 matrice in a for loop ?

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Nina Nina
Nina Nina 2019-11-19
关闭: MATLAB Answer Bot 2021-8-20
i have a 9 matrice (7 8 9;2 1 4; 5 6 3) and i have to write a code in a for loop that gives me the answer to the sum of all 9 numbers
  2 个评论
Erivelton Gualter
Erivelton Gualter 2019-11-19
Do you means, you want the sum of all the values for a given matrix (for example, (7 8 9;2 1 4; 5 6 3)) ?
Nina Nina
Nina Nina 2019-11-19
yes, i need a code written in a for loop that when you give it a 9 matrice it gives you the sum of all numbers for example you give it the matrice above and it gives you 45 (the sum of those numbers)

回答(1 个)

KALYAN ACHARJYA
KALYAN ACHARJYA 2019-11-19
编辑:KALYAN ACHARJYA 2019-11-19
"May the question is: how to sum a 9 matrices elements in a for loop?"
No need of loop, here mat is given matrix
result=sum(mat(:))
Must be loop have to use, then,
Hints:
for i=1:r
for j=1:col
sum_mat=sum_mat+mat(i,j);
end
end
  2 个评论
Nina Nina
Nina Nina 2019-11-19
its a school assignment where i must use a for loop
KALYAN ACHARJYA
KALYAN ACHARJYA 2019-11-19
Then Hints are sufficient, I will not tell you more. Please read Matlab documentation.

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