How to convert characters to numbers in C language?

2 years ago
Olivia Parker
1 minute

In the C language, you can use the atoi() function to convert a string to an integer. For example:

#include <stdio.h>
#include <stdlib.h>

int main() {
    char str[] = "12345";
    int num = atoi(str);

    printf("The converted number is: %d\n", num);

    return 0;
}

The result of the operation is:

The converted number is: 12345

Moreover, it is possible to use the sscanf() function for converting characters to numbers, as shown below:

#include <stdio.h>

int main() {
    char str[] = "67890";
    int num;
    
    sscanf(str, "%d", &num);

    printf("The converted number is: %d\n", num);

    return 0;
}

The result of the operation is:

The converted number is: 67890
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