C Tutorials

How to Convert an Array of Strings to an Array of Integers in C

How to Convert an Array of Strings to an Array of Integers in C ?

Answer

To convert an array of strings to an array of integers in C, you can use the `atoi` function from the `stdlib.h` library to parse each string element into an integer.

✐ Examples

1 Convert Strings to Integers

In this example,

We have an array of strings named strArray containing string representations of integers.
We initialize an integer array intArray with the same length as strArray.
We use a loop to parse each element of strArray into an integer using the atoi function.
We print the contents of intArray to demonstrate the conversion.

C Program

#include <stdio.h>
#include <stdlib.h>
int main() {
    char *strArray[] = {"10", "20", "30"};
    int intArray[sizeof(strArray) / sizeof(strArray[0])];
    for (int i = 0; i < sizeof(strArray) / sizeof(strArray[0]); i++) {
        intArray[i] = atoi(strArray[i]);
    }
    for (int i = 0; i < sizeof(intArray) / sizeof(intArray[0]); i++) {
        printf("%d ", intArray[i]);
    }
    return 0;
}

Output

10 20 30

Summary

In this tutorial, we learned How to Convert an Array of Strings to an Array of Integers in C language with well detailed examples.

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