Question

How to remove the last digit from a number in C

Answer 1

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

unsigned int remove_last_digit(unsigned int n) {
    static char tmp[10];
     
    sprintf(tmp, "%d", n);
    
    tmp[strlen(tmp) - 1] = '\0';
     
    return atoi(tmp);
}
 
int main(void) {
    unsigned int n = 8405796;
    printf("n: %d\n", n);
 
    n = remove_last_digit(n);
     
    printf("n: %d\n", n);
     
    return 0;
}
 
 
   
/*
run:
   
n: 8405796
n: 840579
  
*/

 

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Answer 2

#include <stdio.h>

int main() {
    int n = 8405796;
    
    n = n / 10; // Remove the last digit

    printf("After removing the last digit: %d\n", n);

    return 0;
}


/*
run:

After removing the last digit: 840579

*/

 

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