C One Dimensional Array

Array

Array is type of variable which contains one or more than one values in c language. In c language array contains same type values.

There are three types of array: (1.) 1-D Array (2.) 2-D Array (3.) Multidimensional Array

1-D Array

It is type of array. Index always start from zero(0). First value always assign into zero(0) index. A single index of array contains only one value.

Syntax

data-type arrayName[ ] = {value1, value2, value3,.................};

Program

#include <stdio.h> 
#include <conio.h> 
void main(){
 int arr[]={10,20,30,20,10,50,20};
 clrscr();
 printf("\n This is a 1-d array program.");
 printf("\n value of arr[1] = %d ",arr[1]);
 getch();
}

See Output

If array data-type is int then array will contain only int type values.

Program

#include <stdio.h> 
#include <conio.h> 
void main(){
 int arr[]={10,20,30,20,10,50,20};
  int i;
 clrscr();
 printf("\n This is 1-d array program.");
 for(i=0;i<7;i++){
 printf("\n value of arr[%d] = %d",i,arr[i]);
 }
 getch();
}

See Output

Syntax

data-type arrayName[size] = {value1, value2, value3,.................};

Program

#include <stdio.h> 
#include <conio.h> 
void main(){
 int arr[7]={10,20,30,20,10,50,20};
  int i;
 clrscr();
 printf("\n This is 1-d array program.");
 for(i=0;i<7;i++){
 printf("\n value of arr[%d] = %d",i,arr[i]);
 }
 getch();
}

See Output

Syntax

data-type arrayName[size];

Program

#include <stdio.h> 
#include <conio.h> 

void main(){ 
 int arr[7];
  int i;
 clrscr();
 printf("\n This is 1-d array program.");

 arr[0] = 100;
 arr[1] = 200;
 arr[2] = 300;
 arr[3] = 200;
 arr[4] = 400;
 arr[5] = 100;
 arr[6] = 500;

 for(i=0;i<7;i++){
 printf("\n value of arr[%d] = %d",i,arr[i]);
 }
 getch();
}

See Output

In below program, you can use 1-D array dynamically.

In below program, you can read values from user into 1-D array.

Program

#include <stdio.h> 
#include <conio.h> 
void main(){
 int arr[7];
  int i;
 clrscr();
 printf("\n This is 1-d array program.");

 for(i=0;i<7;i++){
 printf("\n Enter value for arr[%d] = ",i);
 scanf("%d",&arr[i]);
 }

 for(i=0;i<7;i++){
 printf("\n value of arr[%d] = %d",i,arr[i]);
 }
 getch();
}

See Output

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