Answer Posted / shubham singh

#include<conio.h>
#include<stdio.h>
void main()
{
int a[2][2],b[2][2],c[2][2];//declare 3 array int type
int i,j,k;

for(i=0;i<2;i++)
{
for(j=0;j<2;j++)
{
} scanf("%d",&a[i][j]);//inserting element in array a

}
for(i=0;i<2;i++)
{
for(j=0;j<2;j++)
{
} scanf("%d",&b[i][j]);//inserting element in array b

}
for(i=0;i<2;i++)
{
for(j=0;j<2;j++)
{
for(k=;k<2;K++)
{
c[i][j]+=a[i][k]*b[i][j];//multiply of a and b
}
}
}

for(i=0;i<2;i++)
{
for(j=0;j<2;j++)
{
printf("%d",a[i][j]);//printing element of array c
}
}
}//main close

design and implement a data structure and performs the following operation with the help of file (included 1000 student marks in 5 sub. and %also) 1.how many students are fail in all 5 subjects (if >35) 2. delete all student data those are fail in all 5 subjects. 3. update the grace marks (5 no. if exam paper is 100 marks) 4. arrange the student data in ascending order basis of marks. 5.insert double of deleted students with marks in the list.

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