Answer Posted / akshay sharma

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

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

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


c[i][j]=a[i][j]*b[i][j];

}
}

for(i=0;i<2;i++)
{
for(j=0;j<2;j++)
{
printf("%d",c[i][j]);
}
}
}

main(){char *str;scanf("%s",str);printf("%s",str); }The error in the above program is: a) Variable 'str' is not initialised b) Format control for a string is not %s c) Parameter to scanf is passed by value. It should be an address d) none

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