Copy one Array to another Array
This C program allows the user to enter the size of an Array and then elements of an array. Using For Loop in C Programming, we are going to copy each and every element to second array.
CODE
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/* c program to copy one array to another */ #include<stdio.h> int main() { int i, Size, a[20], b[20]; printf("\n Please Enter the Array Size \n"); scanf("%d", &Size); printf("\n Please Enter the Array Elements \n"); for(i = 0; i < Size; i++) { scanf("%d", &a[i]); } /* copying one array to another */ for(i = 0; i < Size; i++) { b[i] = a[i]; } printf("\n Elements of Second Array are: \n"); for(i = 0; i < Size; i++) { printf("\n Value Inside Array b[%d] = %d", i, b[i]); } return 0; } |
OUTPUT
ANALYSIS:
In this Program, We declared 2 arrays a, b with the size of 20. Below printf statement asks the User to enter the array a[] size (Number of elements it can hold).
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printf("\n Please Enter the Array Size\n"); |
Below scanf statement will assign the user entered values to Size variable.
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scanf("%d", &Size); |
Below for loop will helps to iterate each and every cell present in the a[5] array. Condition inside the for loops (i < Size) will ensure the compiler, not to exceed the array limit.
scanf statement inside the for loop will store the user entered values in every individual array element such as a[0], a[1], a[2], a[3], a[4]
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for(i = 0; i < Size; i++) { scanf("%d", &a[i]); } |
In the next line, We have one more for loop to copy an array to another array.
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/* copying one array to another */ for(i = 0; i < Size; i++) { b[i] = a[i]; } |
Above For loop is used to copy each every element present in the array a[5] into b[5] array. From the above screenshot
User inserted values are
a[5] = {10, 25, 45, 75, 95}
First Iteration
The value of i will be 0 and the condition (i < 5) is True. So, it will start executing the statements inside the loop until the condition fails.
b[i] = a[i];
b[0] = a[0]
b[0] = 10
Second Iteration
The value of i will be 1 and the condition (i < 5) is True. So, it will start executing the statements inside the loop until the condition fails.
b[i] = a[i];
b[1] = a[1]
b[1] = 25
Third Iteration
The value of i will be 2 and the condition (i < 5) is True. So, it will start executing the statements inside the loop until the condition fails.
b[i] = a[i];
b[2] = a[2]
b[2] = 45
Fourth Iteration
The value of i will be 3 and the condition (i < 5) is True. So, it will start executing the statements inside the loop until the condition fails.
b[i] = a[i];
b[3] = a[3]
b[3] = 75
Fifth Iteration
The value of i will be 4 and the condition (i < 5) is True. So, it will start executing the statements inside the loop until the condition fails.
b[i] = a[i];
b[4] = a[4]
b[4] = 95
After the incrementing the value of i, i will become 5 So, the condition (i < Size) will fail. So it will exit from the loop.
Next for loops, Will traverse as we explained above but instead of copying the elements it will display the values one by one using the printf statements inside them.
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for(i = 0; i < Size; i++) { printf("\n Value Inside Array b[%d] = %d", i, b[i]); } |
The final output of the Addition Array is:
b[5] = {10, 25, 45, 75, 95}
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