Write a function that takes in a string parameter and checks to see whether or not it is an integer,

#include <stdio.h>

int strtoint(char *s)
{
int index = 0, flag = 0;

while( *(s+index) != '{xtypo_info}
#include <stdio.h>

int strtoint(char *s)
{
int index = 0, flag = 0;

while( *(s+index) != '\0')
{
if( (*(s + index) >= '0') &&
*(s + index) <= '9')
{
flag = 1;
index++;
}
else
{
flag = 0;
break;
}
}

if( flag == 1 )
return atoi(s);
else
return 0;
}

main()
{
printf("%d",strtoint("0123"));
printf("\n%d",strtoint("0123ii"));
}

{/xtypo_info}')
{
if( (*(s + index) >= '0') &&
*(s + index) <= '9')
{
flag = 1;
index++;
}
else
{
flag = 0;
break;
}
}

if( flag == 1 )
return atoi(s);
else
return 0;
}

main()
{
printf("%d",strtoint("0123"));
printf("\n%d",strtoint("0123ii"));
}

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