# How to perform arithmetic operations on two-dimensional array in C?

An array is a group of related data items that are stored with single name.

For example, int student[30]; //student is an array name that holds 30 collection of data items with a single variable name

## Operations of array

• Searching − It is used to find whether particular element is present or not

• Sorting − It helps in arranging the elements in an array either in ascending or descending order.

• Traversing − It processes every element in an array sequentially.

• Inserting − It helps in inserting the elements in an array.

• Deleting − It helps in deleting an element in an array.

The logic applied to perform arithmetic operation of two-dimensional array is as follows −

for(row = 0; row < i; row++){
for(col = 0;col < j;col++){
sub[row][col] = A[row][col] - B[row][col];
mul[row][col] = A[row][col] * B[row][col];
div[row][col] = A[row][col] / B[row][col];
mod[row][col] = A[row][col] % B[row][col];
}
}

The logic applied to print all arithmetic operation of two-dimensional array is as follows −

printf("Add\t Sub\t Mul\t Div\t Mod");
printf("-------------------------------");
for(row = 0; row < i; row++){
for(col = 0; col < j; col++){
printf("%d \t ", sub[row][col]);
printf("%d \t ", mul[row][col]);
printf("%.2f \t ", div[row][col]);
printf("%d \t ", mod[row][col]);
}
}

## Program

Following is the C program to perform arithmetic operations on two-dimensional array −

Live Demo

#include<stdio.h>
int main(){
int i, j, row, col,A[20][20], B[20][20];
float div[10][10];
printf("enter no: of rows and columns:");
scanf("%d %d", &i, &j);
printf("enter elements of 1st array:");
for(row= 0; row < i; row++){
for(col = 0;col < j;col++){
scanf("%d", &A[row][col]);
}
}
printf("enter elements of 2nd array:");
for(row = 0; row < i; row++){
for(col = 0;col < j;col++){
scanf("%d", &B[row][col]);
}
}
for(row = 0; row < i; row++){
for(col = 0;col < j;col++){
sub[row][col] = A[row][col] - B[row][col];
mul[row][col] = A[row][col] * B[row][col];
div[row][col] = A[row][col] / B[row][col];
mod[row][col] = A[row][col] % B[row][col];
}
}
printf("-------------------------------");
for(row = 0; row < i; row++){
for(col = 0; col < j; col++){
printf("%d \t ", sub[row][col]);
printf("%d \t ", mul[row][col]);
printf("%.2f \t ", div[row][col]);
printf("%d \t ", mod[row][col]);
}
}
return 0;
}

## Output

When the above program is executed, it produces the following result −

enter no: of rows and columns:
3 4
enter elements of 1st array:
1 2 4 5 6 7 3 8 3 2 1 8
enter elements of 2nd array:
1 2 1 2 1 3 4 2 1 2 1 1
-------------------------------
2     0    1   1.00  0
4     0    4   1.00  0
5     3    4   4.00  0
7     3    10  2.00  1
7     5    6   6.00  0
10    4    21  2.00   1
7    -1    12  0.00   3
10    6    16   4.00  0
4    2     3    3.00  0
4    0    4    1.00   0
2    0    1    1.00   0
9    7    8    8.00    0

Updated on: 24-Mar-2021

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