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C

string to int c

atoi(str) is unsafe

This is the prefered method:
(int)strtol(str, (char **)NULL, 10)
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how to convert string to integer in c

#include <stdio.h>
#include <stdlib.h>
int main()
{
    char ch[]="123";
    int a=atoi(ch);
    printf("%d",a);
    return 0;
}
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c string to int

char s[] = "45";

int num = atoi(s);
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string to number in c

int atoi(const char *string)
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how to cast string to int in c

use atoi from the stdlib.h 
char *string = "hi";
int x = atoi(string);
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turn a string into integer in C

// C program to demonstrate 
// the working of SSCANF() to
// convert a string into a number
  
#include <stdio.h>
int main()
{
    const char* str = "12345";
    int x;
    sscanf(str, "%d", &x);
    printf("
The value of x : %d", x);
    return 0;
}
Comment

convert string to int c

const char *number = "10";
char *end;
long int value = strtol(number, &end, 10); 
if (end == number || *end != '' || errno == ERANGE)
    printf("Not a number");
else
    printf("Value: %ld", value);
Comment

string to number in c

int atoi(const char *string)
Comment

string to number in c

int atoi(const char *string)
Comment

string to number in c

int atoi(const char *string)
Comment

string to number in c

int atoi(const char *string)
Comment

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