C Program to convert given string to integer using atoi function.
Arithmetic operation is not possible on a String. Before performing any arithmetic operation we need to convert given string into integer. This conversion is possible in C using atoi function.
#include <stdlib.h>
int main(){
char str[20];
int number;
printf("Enter your String:");
gets(str);
number = atoi(str);
printf("Integer: %d \n\n", number);
printf("Proof => Arithmetic operation on number:\n");
printf("Adding same number %d + %d = %d",number, number, number + number);
return 0;
}
Output of program
Enter your String:123
Integer: 123
Proof => Arithmetic operation on number:
Adding same number 123 + 123 = 246
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