programming-in-c

Programming in C

Compiling a c program

• Create an executable c program file and execute it.

Arrays

One dimensional array ( Vectors )

• Syntax: int arrayVariableName[size];

• Example one - int myNums[4]; // Here 4 is the size of the array, means this array can have upto four items.

• Example two int myNums[] = {1, 4, 6, 8} // Because we are declaring and initiallzing the array at the same time, we don't need to specify the size 4.

Two Dimensional array ( Matrices )

• Syntax: int arrayVariableName[rowsCount][columnsCount];

• This two dimensional array has two rows and each row has 4 items(colums) in the array. You need to loop through it twice to print their values

• Example: int myNums[2][4] = { {2, 3, 2, 1}, {2, 5, 4, 2}

• Example Two:

#include<stdio.h> int main(){
int i=0,j=0;
int arr[4][3]={{1,2,3},{2,3,4},{3,4,5},{4,5,6}};

//Traversing 2D array
for(i=0;i<4;i++){
for(j=0;j<3;j++){
printf("arr[%d] [%d] = %d \n",i,j,arr[i][j]);
}//end of j
}//end of i
return 0;
}

<img width="1434" alt="image" src="https://user-images.githubusercontent.com/11497423/189525386-7f5d95f3-b800-49d3-afa8-fdeda3374afb.png">