If you’ll want to convert a String to an Integer in C, then you are able to do one of many following:
Possibility 1 – Use atoi()
int atoi(const char *str);
You are able to do one thing like this:
#embody <stdio.h>
#embody <stdlib.h>
#embody <string.h>
int essential (void) {
int worth;
char str[20];
strcpy(str,"123");
worth = atoi(str);
printf("String worth = %s, Int worth = %dn", str, worth);
return(0);
}
Possibility 2 – Use strtol()
lengthy int strtol(const char *string, char **laststr,int basenumber);
You are able to do one thing like this:
#embody <stdio.h>
#embody <stdlib.h>
#embody <string.h>
int essential(void) {
char str[10];
char *ptr;
lengthy worth;
strcpy(str, " 123");
worth = strtol(str, &ptr, 10);
printf("decimal %ldn", worth);
return 0;
}
Possibility 3 – Use strtoumax()
uintmax_t strtoumax(const char* string, char** final, int basenumber);
You are able to do one thing like this:
#embody <stdio.h>
#embody <stdlib.h>
#embody <string.h>
int essential(void) {
char str[10];
char *ptr;
int worth;
strcpy(str, " 123");
printf("The integer worth:%d",strtoumax(str, &ptr,10));
return 0;
}