PASSING ONE DIMENSIONAL ARRAY AS ARGUMENT PPT.pptx

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Passing ‘One dimensional
Array’ {
PRAMEESHA
I CSBS
C Programming Language
[As an ARGUMENT]
}
C PROGRAMMING 28/12/2024
}

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What is {ARRAY}
●Arrays are used to store multiple values in a single variable, instead of declaring
separate variables for each value.
●To create an array, define the data type (like int) and specify the name of the array
followed by square brackets [].
●To insert values to it, use a comma-separated list inside curly braces, and make sure all
values are of the same data type:
● 1. One Dimensional Array
● 2. Multi-Dimensional Array
● 3. Two Dimensional Array
}
PRAMEESHA - CSBS 28/12/2024

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One Dimensional Array
●An array where data is arranged in a single dimension is called one
dimensional array.
Syntax : datatype array_name[size];
Here, array_name is an array of type datatype and size is the number of
elements in that array.
For example,
int a[5]; // declares an integer array with 5 elements
float f[5]; // declares an float array with 5 elements

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Two Dimensional Array
●An array where data is arranged in two dimensions is called two dimensional array.
Syntax : datatype array_name[d1][d2];
Here, array_name is an array of type datatype and it has 2 dimensions. The
number of elements in array_name is equal to d1*d2.
For example,
int i[5][5]; // declares an integer array with 25 elements
float f[5][10]; // declares an float array with 50 elements
char n[5][10]; // declares an character array with 50 elements

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Accessing elements of array
●Elements of an array can be accessed by using the name of array and index of
element to be accessed
For example, consider a one dimensional array
int x[10];
Now, fifth element of this array can be accessed as x[4].
Note: First element of array has index 0, so the index of nth element is
n-1.

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Functions in C-Programming
●we can divide a large program into the basic building blocks known as function.
User-defined functions: are the functions which are created by the C programmer, so
that we can use it many times. It reduces the complexity of a big program and optimizes the
code.
Elements of user defined function
• Function declaration (or) Function prototype
• Function call
• Function definition

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Function declaration / Function prototype
●All identifiers in C need to be declared before they are used.
●This is true for functions as well as variables.
●For functions declaration needs to be before the first call of the function.
●A function declaration is also known as function prototype.
●It consists of four parts
1. Return type
2. Function name
3. Parameter list
4. Terminating semicolon
return_typefunction_name(arguments list);

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Function Definition
Function Definition
Function definition consists of two parts
1. Function header
2. Function body

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Array as function parameter
Declaration of function parameter
• return_type function_name (datatype [], [other arguments type]);
• return_type function_name (datatype [size], [other arguments type]);
Declaration of function named parameter
return_type function_name (datatype array_name[ ], [other arguments])
{
body of function;
}
return_type function_name (datatype array_name[size], [other arguments])
{
body of function;
}

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Passing an array as function parameter
#include<stdio.h>
void func(int[], int); // function declaration
int main()
{
int a[5]={1,2,3,4,5}; func(a,5); // function call
return 0;
}
void func(int x[], int size) // function definition
{
int i;
for(i=0;i<5;i++)
printf("%d",x[i]);
}
In this program an array x is passed as parameter from main() to a function func(). The contents of
array are printed using a for loop. OUTPUT – 1 2 3 4 5

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#include<stdio.h>
int avg(int [],int);///Function Declarationint
main(){
int marks[5]={10,20,30,40,50};
int size,average;
size=sizeof(marks)/sizeof(marks[0]);///Number of elements average=avg(marks,size);
///Function call
printf("Average of marks = %dn",average);
printf("Number of Elements = %dn",size);
return 0;
}
int avg(int marks1[],int size)///Function Definion
{
int sum=0,average_mark=0;
for (int i=0;i<size;i++){
sum=sum+marks1[i];
}
average_mark=sum/size;
return average_mark;}
OUTPUT
Average of marks = 30
Number of Elements = 5
Process returned 0 (0x0)

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THANK YOU
C C Programming Language
{
[Any Questions?]
}
C PROGRAMMING 28/12/2024
}

PASSING ONE DIMENSIONAL ARRAY AS ARGUMENT PPT.pptx

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