Answer Posted / john huang

int n=strlen(x) // where x is pointer to hex string
int sum=0;
int leftshift=0;
while(n>0)
{
if((x[n-1]>='0') && (x[n-1]<='9'))
sum+=(x[n-1]-'0')<<leftshift;
if((x[n-1]>='A') && (x[n-1]<='F'))
sum+=(x[n-1]-'A'+10)<<leftshift;
if((x[n-1]>='a') && (x[n-1]<='f'))
sum+=(x[n-1]-'a'+10)<<leftshift;
n--;
leftshift+=4;
}

What is maximum size of array in c?

1048

---

What is the Purpose of 'extern' keyword in a function declaration?

1088

---

Whats s or c mean?

1035

---

A global variable when referred to in another file is declared as this a) local variable b) external variable c) constant d) pointers

1211

---

Explain what is the purpose of "extern" keyword in a function declaration?

1079

---

Give a one-line C expression to test whether a number is a power of 2. [No loops allowed - it's a simple test.]

1096

---

Can we compile a program without main() function?

1133

---

How can I determine whether a machines byte order is big-endian or little-endian?

1067

---

What’s the special use of UNIONS?

1155

---

What is a null string in c?

1052

---

Can a variable be both const and volatile?

1139

---

Explain which function in c can be used to append a string to another string?

1096

---

What is difference between static and global variable in c?

1066

---

write a c program to calculate sum of digits till it reduces to a single digit using recursion

3319

---

Which driver is a pure java driver

1632

---