Array C programming
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This document provides an introduction and overview of arrays in C programming. It defines an array as a collection of the same type of data. It describes how to declare and initialize single-dimensional and two-dimensional arrays, including examples. It also provides simple programs to demonstrate summing values in a single-dimensional array and outputting values in a two-dimensional array.
![Declaring Array Variables
Data_type array_name [index];
Example:
float cgpa[10];
char swe[15];
int num[5];](https://image.slidesharecdn.com/array-180802132630/85/Array-C-programming-4-320.jpg)
![Initialing Array Variables
Data type array name [size];
Example:
int num[5] = { 1, 2, 3, 4, 5};
int id[0] = 13;
int id[1] = 14;
int id[2] = 15;
int id[3] = 16;
int id[4] = 17;
Num [0] references the first element in the array.
Num[4] references the last element in the array.](https://image.slidesharecdn.com/array-180802132630/85/Array-C-programming-5-320.jpg)
![Simple Array Program
#include<stdio.h>
int main() {
int i,sum=0;
int marks[5];
for (i=0; i<5; i++)
{
printf (“Enter marks”);
scanf (“%d”,&marks[i]);
}
for (i=0; i<5; i++)
sum = sum+marks[i];
printf(“n summation marks=%d”,sum);
return 0;
}](https://image.slidesharecdn.com/array-180802132630/85/Array-C-programming-6-320.jpg)
![Declaring two dimensional Array Variables
data_type array_name [row size] [column size]
Example:
int a[3][4];
char swe[15][8];
float num[2][3];](https://image.slidesharecdn.com/array-180802132630/85/Array-C-programming-8-320.jpg)
![Initialing Two-Dimensional Arrays
Multidimensional arrays may be initialized by specifying bracketed
values for each row. Following is an array with 3 rows and each
row has 4 columns.
int a[3][4] = {
{0, 1, 2, 3} ,
{4, 5, 6, 7} ,
{8, 9, 10, 11}
};
The following initialization is equivalent to the previous example −
int a[3][4] = {0,1,2,3,4,5,6,7,8,9,10,11};](https://image.slidesharecdn.com/array-180802132630/85/Array-C-programming-9-320.jpg)
![Two-Dimensional Array Program
#include <stdio.h>
int main () {
/* an array with 5 rows and 2 columns*/
int a[5][2] = { {0,0}, {1,2}, {2,4}, {3,6},{4,8}};
int i, j;
/* output each array element's value */
for ( i = 0; i < 5; i++ ) {
for ( j = 0; j < 2; j++ ) {
printf("a[%d][%d] = %dn", i,j, a[i][j] );
}
}
return 0;
}](https://image.slidesharecdn.com/array-180802132630/85/Array-C-programming-10-320.jpg)
Array C programming
- 1. WELCOME TO MY PRESENTATION AbdullahAlYeamin Maruf ID: 173-35-256
- 2. Array in C programming Language
- 3. Introducing Arrays Array is a data structure that represents a collection of the same types of data. An Array of 10 Elements of type int.
- 4. Declaring Array Variables Data_type array_name [index]; Example: float cgpa[10]; char swe[15]; int num[5];
- 5. Initialing Array Variables Data type array name [size]; Example: int num[5] = { 1, 2, 3, 4, 5}; int id[0] = 13; int id[1] = 14; int id[2] = 15; int id[3] = 16; int id[4] = 17; Num [0] references the first element in the array. Num[4] references the last element in the array.
- 6. Simple Array Program #include<stdio.h> int main() { int i,sum=0; int marks[5]; for (i=0; i<5; i++) { printf (“Enter marks”); scanf (“%d”,&marks[i]); } for (i=0; i<5; i++) sum = sum+marks[i]; printf(“n summation marks=%d”,sum); return 0; }
- 7. Two dimensional Array A two dimensional array has two indexes. The first index refers to the row, and the second to the column.
- 8. Declaring two dimensional Array Variables data_type array_name [row size] [column size] Example: int a[3][4]; char swe[15][8]; float num[2][3];
- 9. Initialing Two-Dimensional Arrays Multidimensional arrays may be initialized by specifying bracketed values for each row. Following is an array with 3 rows and each row has 4 columns. int a[3][4] = { {0, 1, 2, 3} , {4, 5, 6, 7} , {8, 9, 10, 11} }; The following initialization is equivalent to the previous example − int a[3][4] = {0,1,2,3,4,5,6,7,8,9,10,11};
- 10. Two-Dimensional Array Program #include <stdio.h> int main () { /* an array with 5 rows and 2 columns*/ int a[5][2] = { {0,0}, {1,2}, {2,4}, {3,6},{4,8}}; int i, j; /* output each array element's value */ for ( i = 0; i < 5; i++ ) { for ( j = 0; j < 2; j++ ) { printf("a[%d][%d] = %dn", i,j, a[i][j] ); } } return 0; }