Array in c programming
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This document discusses arrays in C programming. It defines an array as a collection of the same type of data elements stored in contiguous memory locations that are accessed via an index. It provides the syntax for declaring a 1-dimensional array, which specifies the type, array name, and number of elements. An example declares and initializes an integer array of size 5. The document also shows examples of summing the elements of a hardcoded and user-input array using indexing and loops.
![Array
num [0]
num[1]
num[2]
num [3]
num[4]
num[5]
Array is a data structure that represents a collection of the
same types of data.
Num reference
An Array of 5 Elements of type
int .
int num[5];](https://image.slidesharecdn.com/c-programming-one-drive-180328085551/85/Array-in-c-programming-2-320.jpg)
![Array Declaration
Syntax:
<type> <arrayName>[<array_size>]
Ex. int a[6];
The array elements are all values of the type <type>.
The size of the array is indicated by <array_size>, the number of elements in
the array.
<array_size> must be an int constant or a constant expression. Note that an
array can have multiple dimensions.](https://image.slidesharecdn.com/c-programming-one-drive-180328085551/85/Array-in-c-programming-3-320.jpg)
![Array Declaration(continued)
// array of 6
int a[6];
-- -- ---- ----
4 530 21
0 1 2 3 4 5
a
Collection of 6 variable
1 dimensional Array
Datatype
Array name
Array
index start
from 0
Array index](https://image.slidesharecdn.com/c-programming-one-drive-180328085551/85/Array-in-c-programming-4-320.jpg)
![Sum 1,2,3,4
#include<stdio.h>
int main()
{
int a,b,c,d;
a=1 ;
b=2 ;
c=3 ;
d=4 ;
int sum=a+b+c+d;
printf(“%d”,sum);
return 0;
}
Output
10
#include<stdio.h>
int main()
{
int num[4];
num[0]=1 ;
num[1]=2 ;
num[2]=3 ;
num[3]=4 ;
int sum=num[0]+num[1]+num[2]+num[3];
printf(“%d”,sum);
return 0;
}
Output
10
Sum 1,2,3,4
Arraynormal
Array](https://image.slidesharecdn.com/c-programming-one-drive-180328085551/85/Array-in-c-programming-5-320.jpg)
![#include<stdio.h>
int main()
{
int num[4];
scanf(“%d%d%d%d”,&num[0] ,&num[1] ,&num[2],&num[3]);
int sum=num[0]+num[1]+num[2]+num[3];
printf(“%d”,sum);
return 0;
}
Output
Sum from user input
#include<stdio.h>
int main()
{
int num[4],sum=0,i;
for(i=0; i<4; i++)
{ scanf(“%d”,&num[ i ] ); }
for(i=0; i<4; i++)
{ sum= sum + num [ i ] ; }
printf(“%d”,sum);
return 0;
}
Output
Sum from user input](https://image.slidesharecdn.com/c-programming-one-drive-180328085551/85/Array-in-c-programming-6-320.jpg)
Array in c programming
- 2. Array num [0] num[1] num[2] num [3] num[4] num[5] Array is a data structure that represents a collection of the same types of data. Num reference An Array of 5 Elements of type int . int num[5];
- 3. Array Declaration Syntax: <type> <arrayName>[<array_size>] Ex. int a[6]; The array elements are all values of the type <type>. The size of the array is indicated by <array_size>, the number of elements in the array. <array_size> must be an int constant or a constant expression. Note that an array can have multiple dimensions.
- 4. Array Declaration(continued) // array of 6 int a[6]; -- -- ---- ---- 4 530 21 0 1 2 3 4 5 a Collection of 6 variable 1 dimensional Array Datatype Array name Array index start from 0 Array index
- 5. Sum 1,2,3,4 #include<stdio.h> int main() { int a,b,c,d; a=1 ; b=2 ; c=3 ; d=4 ; int sum=a+b+c+d; printf(“%d”,sum); return 0; } Output 10 #include<stdio.h> int main() { int num[4]; num[0]=1 ; num[1]=2 ; num[2]=3 ; num[3]=4 ; int sum=num[0]+num[1]+num[2]+num[3]; printf(“%d”,sum); return 0; } Output 10 Sum 1,2,3,4 Arraynormal Array
- 6. #include<stdio.h> int main() { int num[4]; scanf(“%d%d%d%d”,&num[0] ,&num[1] ,&num[2],&num[3]); int sum=num[0]+num[1]+num[2]+num[3]; printf(“%d”,sum); return 0; } Output Sum from user input #include<stdio.h> int main() { int num[4],sum=0,i; for(i=0; i<4; i++) { scanf(“%d”,&num[ i ] ); } for(i=0; i<4; i++) { sum= sum + num [ i ] ; } printf(“%d”,sum); return 0; } Output Sum from user input
- 8. ASHJADUL AMIN ID=171-004-041 Section=A1 Department of Textile Engineering Primeasia University, Banani, Dhaka. MD. MAZHARUL ISLAM ID=171-009-041 Section=A1 Department of Textile Engineering Primeasia University, Banani , Dhaka. Submitted By