#include <stdio.h>


 //This program finds the row with the maximum sum in a 3x3 array.


int main() {
    
    //Declare a 3x3 array with initial values.
  
    int arr[3][3] = {
        {2, 3, 18},
        {5, 6, 7},
        {0, 2, 8}
    };

    
    //Initialize variables to keep track of the maximum sum and the corresponding row number.
     
    int max = 0;      // maximum sum found so far
    int row = 0;     // row number with the maximum sum

    
     //Iterate over each row of the array.
     
    for (int i = 0; i < 3; i++) {
        
         //Initialize a variable to store the sum of the current row.
        
        int sum = 0; //If I don't reset the count here, then at the beginning of each row, a new sum is not calculated, and consequently, the value of the previous iteration is carried over, resulting in an incorrect output. At the beginning, I made that mistake.

        
         //Iterate over each element in the current row and add it to the sum.
         
        for (int j = 0; j < 3; j++) {
            sum += arr[i][j];
        }

      /*
         Check if the sum of the current row is greater than the maximum sum found so far.
         If it is, update the maximum sum and the corresponding row number.
      */
       
        if (sum > max) {
            max = sum;
            row = i;
        }
    }
    
    
     //Print the row number with the maximum sum.
     
    printf("The row number with maximum sum is %d\n", row + 1); // When printing the result, it's more intuitive to display the row number as 1, 2, or 3, rather than 0, 1, or 2. By adding 1 to the row variable, I'm effectively converting the zero-based index to a one-based index, which is more meaningful to humans

    return 0;
}
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#include <stdio.h>
int main()
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    char name[50];
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    return 0;
    
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About C

C language is one of the most popular general-purpose programming language developed by Dennis Ritchie at Bell laboratories for UNIX operating system. The initial release of C Language was in the year 1972. Most of the desktop operating systems are written in C Language.

Key features:

  • Structured Programming
  • Popular system programming language
  • UNIX, MySQL and Oracle are completely written in C.
  • Supports variety of platforms
  • Efficient and also handle low-level activities.
  • As fast as assembly language and hence used as system development language.

Syntax help

Loops

1. If-Else:

When ever you want to perform a set of operations based on a condition if-else is used.

if(conditional-expression) {
   // code
} else {
   // code
}

You can also use if-else for nested Ifs and if-else-if ladder when multiple conditions are to be performed on a single variable.

2. Switch:

Switch is an alternative to if-else-if ladder.

switch(conditional-expression) {    
case value1:    
 // code    
 break;  // optional  
case value2:    
 // code    
 break;  // optional  
...    
    
default:     
 // code to be executed when all the above cases are not matched;    
}

3. For:

For loop is used to iterate a set of statements based on a condition.

for(Initialization; Condition; Increment/decrement){  
  // code  
}

4. While:

While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.

while(condition) {  
 // code 
}

5. Do-While:

Do-while is also used to iterate a set of statements based on a condition. It is mostly used when you need to execute the statements atleast once.

do {
  // code 
} while (condition);

Arrays

Array is a collection of similar data which is stored in continuous memory addresses. Array values can be fetched using index. Index starts from 0 to size-1.

Syntax

One dimentional Array:

data-type array-name[size];

Two dimensional array:

data-type array-name[size][size];

Functions

Function is a sub-routine which contains set of statements. Usually functions are written when multiple calls are required to same set of statements which increases re-usuability and modularity.

Two types of functions are present in C

  1. Library Functions:

Library functions are the in-built functions which are declared in header files like printf(),scanf(),puts(),gets() etc.,

  1. User defined functions:

User defined functions are the ones which are written by the programmer based on the requirement.

How to declare a Function

return_type function_name(parameters);

How to call a Function

function_name (parameters)

How to define a Function

return_type function_name(parameters) {  
  //code
}