the string to extract digits and save to integer array in C

Question

Hello Brother how to the string to extract digits and save to integer array in C. It looks as shown below: int digits[100]; // Assuming allows 100 sets of figures input: a 54 df 12 jlk 264 jo 5 erqa 504 df 45 digits[0]=54; digits[1]=12; digits[2]=264; digits[3]=5; digits[4]=504; digits[5]=45; Regards Ken

Vulpes · Answer

Try this: #include #include int main(void) { int digits[100]; // Assuming allows 100 sets of figures char input[] = a54df12jlk264jo5erqa504df45; // or get from user char dest[12]; int start = -1; int i = 0; int j = 0; int k; int len; while(input[i]) { if(isdigit(input[i])) { if(start == -1) { start = i; } } else if (start > -1) { len = i - start; strncpy(dest &input[start] len); dest[len] = '\0'; digits[j] = atoi(dest); j++; start = -1; } i++; } if (start > - 1) { len = i - start; strncpy(dest &input[start] len); dest[len] = '\0'; digits[j] = atoi(dest); } else { j--; } for(k = 0; k return 0; }

Ken H · Answer

hi Vulpes I've included several header files.now it has the normal operation of the. thank for you :) #include #include #include #include int main(void) { unsigned long int digits[100]; // Assuming allows 100 sets of figures char input[] = a54df12jlk264jo5erqa504df45; // or get from user char dest[12]; int start = -1; int i = 0; int j = 0; int k; int len; while(input[i]) { if(isdigit(input[i])) { if(start == -1) { start = i; } } else if (start > -1) { len = i - start; strncpy(dest &input[start] len); dest[len]='\0'; digits[j]=atoi(dest); j++; start=-1; } i++; } if (start>- 1) { len = i - start; strncpy(dest &input[start] len); dest[len]='\0'; digits[j]=atoi(dest); } else { j--; } for(k=0;k return 0; } Regards Ken