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#include <stdio.h>
char s[]="123 ab 4";
char *p;
int v,n,k;
void main() {
p=s;
while (1) {
k=sscanf(p,"%d%n",&v,&n);
printf("k,v,n=%d,%d,%d\n",k,v,n);
if (1==k) {
p+=n;
} else if (0==k) {
printf("skip char[%c]\n",p[0]);
p++;
} else {//EOF==k
break;
}
}
printf("End.\n");
}
//k,v,n=1,123,3
//k,v,n=0,123,3
//skip char[ ]
//k,v,n=0,123,3
//skip char[a]
//k,v,n=0,123,3
//skip char[b]
//k,v,n=1,4,2
//k,v,n=-1,4,2
//End.
#include <ctype.h>
#include <string.h>
#include <stdio.h>
int get_sum_from_str(const char* str)
{
int dflag = 0;
char digits[11];
char ch;
int sum = 0;
int i;
while(*str)
{
ch = *str++;
if(dflag)
{
if(isdigit(ch))
{
digits[i++] = ch;
}
else
{
digits[i++] = '\0';
sum += strtol(digits, NULL, 10);
dflag = 0;
}
}
else
{
if(isdigit(ch))
{
i = 0;
digits[i++] = ch;
dflag = 1;
}
}
}
if(i > 0)
{
digits[i++] = '\0';
sum += strtol(digits, NULL, 10);
}
return sum;
}
int main(void)
{
printf("%d\n", get_sum_from_str("abc23dshjdj124ydus@6"));
return 0;
}
int getStringNum(char* String)
{
int len = strlen(String);
for(int i = 0; i < len; i++)
if(String[i] < '0' || String[i] > '9') String[i] = ' ';
int sum = 0;
int num;
while(sscanf(String, "%d", &num) == 1)
sum += num;
return sum;
}
int getStringNum(char* String)
{
int len = strlen(String);
for(int i = 0; i < len; i++)
if(String[i] < '0' || String[i] > '9')
String[i] = ' ';
char *token;
int sum = 0;
int num;
token = strtok(String, " ");
while(token != NULL)
{
num = atoi(token);
sum += num;
token = strtok(NULL, " ");
}
return sum;
}