Functions - C Programming Questions and Answers

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What will be the output of the program?

 #include
 int func1(int);  
 
 int main() 
 {    
     int k=35;    
     k = func1(k=func1(k=func1(k)));   
     printf("k=%d\n", k);    
     return 0;
 }
 int func1(int k)
 {     
     k++;  
     return k; 
 }

k=35

k=36

k=37

k=38

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Answer : Option D

Explanation :

Step 1: int k=35; The variable k is declared as an integer type and initialized to 35.

Step 2: k = func1(k=func1(k=func1(k))); The func1(k) increement the value of k by 1 and return it. Here the func1(k) is called 3 times. Hence it increements value of k = 35 to 38. The result is stored in the variable k = 38.