Actual Argument And Formal Argument-:

• Actual argument/Actual Parameter are those argument whose value are transferred to the function at the time of its calling and actual argument may be constant,variable or an expression.
• Formal Argument /Formal Parameter are those argument which receives the value of actual argument.
• The data type,order,counting of actual and formal argument should match existingly.

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Example-:

#include<stdio.h>

#include<conio.h>

int sum_value(int,int)

main()

{int a=0,b=0,s=0;

printf("Enter The Value Of a And b \n ");

scanf("%d %d",&a,&b);

s=sum_value(a,b);            /* Actual Argument */

printf("%d sum=%d",s);

getch();

}

int sum_value(int a,int b)    /* Formal Argument */

{s=0;

  s=a+b;

  return s;

}

Output-:

Enter The Value Of a And b 10

5

sum=15